diff --git a/src/app/cmdoptions.cpp b/src/app/cmdoptions.cpp
index 7ae889915..507b97eb4 100644
--- a/src/app/cmdoptions.cpp
+++ b/src/app/cmdoptions.cpp
@@ -498,7 +498,7 @@ QString wrapText(const QString &text, int initialIndentation = USAGE_TEXT_COLUMN
     QStringList lines = {words.first()};
     int currentLineMaxLength = wrapAtColumn - initialIndentation;
 
-    for (const QString &word : copyAsConst(words.mid(1))) {
+    for (const QString &word : asConst(words.mid(1))) {
         if (lines.last().length() + word.length() + 1 < currentLineMaxLength) {
             lines.last().append(' ' + word);
         }
diff --git a/src/app/filelogger.cpp b/src/app/filelogger.cpp
index bb6c6a34a..c16c9deb3 100644
--- a/src/app/filelogger.cpp
+++ b/src/app/filelogger.cpp
@@ -51,7 +51,7 @@ FileLogger::FileLogger(const QString &path, const bool backup, const int maxSize
         this->deleteOld(age, ageType);
 
     const Logger *const logger = Logger::instance();
-    for (const Log::Msg &msg : copyAsConst(logger->getMessages()))
+    for (const Log::Msg &msg : asConst(logger->getMessages()))
         addLogMessage(msg);
 
     connect(logger, &Logger::newLogMessage, this, &FileLogger::addLogMessage);
@@ -88,7 +88,7 @@ void FileLogger::deleteOld(const int age, const FileLogAgeType ageType)
     QDateTime date = QDateTime::currentDateTime();
     QDir dir(Utils::Fs::branchPath(m_path));
 
-    for (const QFileInfo &file : copyAsConst(dir.entryInfoList(QStringList("qbittorrent.log.bak*"), QDir::Files | QDir::Writable, QDir::Time | QDir::Reversed))) {
+    for (const QFileInfo &file : asConst(dir.entryInfoList(QStringList("qbittorrent.log.bak*"), QDir::Files | QDir::Writable, QDir::Time | QDir::Reversed))) {
         QDateTime modificationDate = file.lastModified();
         switch (ageType) {
         case DAYS:
diff --git a/src/base/bittorrent/session.cpp b/src/base/bittorrent/session.cpp
index 78a898456..fcdceaa96 100644
--- a/src/base/bittorrent/session.cpp
+++ b/src/base/bittorrent/session.cpp
@@ -199,7 +199,7 @@ namespace
 
         for (auto i = categories.cbegin(); i != categories.cend(); ++i) {
             const QString &category = i.key();
-            for (const QString &subcat : copyAsConst(Session::expandCategory(category))) {
+            for (const QString &subcat : asConst(Session::expandCategory(category))) {
                 if (!expanded.contains(subcat))
                     expanded[subcat] = "";
             }
@@ -610,7 +610,7 @@ void Session::setTempPathEnabled(bool enabled)
 {
     if (enabled != isTempPathEnabled()) {
         m_isTempPathEnabled = enabled;
-        for (TorrentHandle *const torrent : qAsConst(m_torrents))
+        for (TorrentHandle *const torrent : asConst(m_torrents))
             torrent->handleTempPathChanged();
     }
 }
@@ -624,7 +624,7 @@ void Session::setAppendExtensionEnabled(bool enabled)
 {
     if (isAppendExtensionEnabled() != enabled) {
         // append or remove .!qB extension for incomplete files
-        for (TorrentHandle *const torrent : qAsConst(m_torrents))
+        for (TorrentHandle *const torrent : asConst(m_torrents))
             torrent->handleAppendExtensionToggled();
 
         m_isAppendExtensionEnabled = enabled;
@@ -752,7 +752,7 @@ bool Session::addCategory(const QString &name, const QString &savePath)
         return false;
 
     if (isSubcategoriesEnabled()) {
-        for (const QString &parent : copyAsConst(expandCategory(name))) {
+        for (const QString &parent : asConst(expandCategory(name))) {
             if ((parent != name) && !m_categories.contains(parent)) {
                 m_categories[parent] = "";
                 emit categoryAdded(parent);
@@ -775,12 +775,12 @@ bool Session::editCategory(const QString &name, const QString &savePath)
     m_categories[name] = savePath;
     m_storedCategories = map_cast(m_categories);
     if (isDisableAutoTMMWhenCategorySavePathChanged()) {
-        for (TorrentHandle *const torrent : copyAsConst(torrents()))
+        for (TorrentHandle *const torrent : asConst(torrents()))
             if (torrent->category() == name)
                 torrent->setAutoTMMEnabled(false);
     }
     else {
-        for (TorrentHandle *const torrent : copyAsConst(torrents()))
+        for (TorrentHandle *const torrent : asConst(torrents()))
             if (torrent->category() == name)
                 torrent->handleCategorySavePathChanged();
     }
@@ -790,7 +790,7 @@ bool Session::editCategory(const QString &name, const QString &savePath)
 
 bool Session::removeCategory(const QString &name)
 {
-    for (TorrentHandle *const torrent : copyAsConst(torrents()))
+    for (TorrentHandle *const torrent : asConst(torrents()))
         if (torrent->belongsToCategory(name))
             torrent->setCategory("");
 
@@ -877,7 +877,7 @@ bool Session::addTag(const QString &tag)
 bool Session::removeTag(const QString &tag)
 {
     if (m_tags.remove(tag)) {
-        for (TorrentHandle *const torrent : copyAsConst(torrents()))
+        for (TorrentHandle *const torrent : asConst(torrents()))
             torrent->removeTag(tag);
         m_storedTags = m_tags.toList();
         emit tagRemoved(tag);
@@ -1085,7 +1085,7 @@ void Session::configure()
 void Session::processBannedIPs(libt::ip_filter &filter)
 {
     // First, import current filter
-    for (const QString &ip : copyAsConst(m_bannedIPs.value())) {
+    for (const QString &ip : asConst(m_bannedIPs.value())) {
         boost::system::error_code ec;
         libt::address addr = libt::address::from_string(ip.toLatin1().constData(), ec);
         Q_ASSERT(!ec);
@@ -1770,7 +1770,7 @@ void Session::enableBandwidthScheduler()
 void Session::populateAdditionalTrackers()
 {
     m_additionalTrackerList.clear();
-    for (QString tracker : copyAsConst(additionalTrackers().split('\n'))) {
+    for (QString tracker : asConst(additionalTrackers().split('\n'))) {
         tracker = tracker.trimmed();
         if (!tracker.isEmpty())
             m_additionalTrackerList << tracker;
@@ -1781,7 +1781,7 @@ void Session::processShareLimits()
 {
     qDebug("Processing share limits...");
 
-    for (TorrentHandle *const torrent : copyAsConst(torrents())) {
+    for (TorrentHandle *const torrent : asConst(torrents())) {
         if (torrent->isSeed() && !torrent->isForced()) {
             if (torrent->ratioLimit() != TorrentHandle::NO_RATIO_LIMIT) {
                 const qreal ratio = torrent->realRatio();
@@ -1934,7 +1934,7 @@ bool Session::deleteTorrent(const QString &hash, bool deleteLocalFiles)
         m_nativeSession->remove_torrent(torrent->nativeHandle(), libt::session::delete_partfile);
 #endif
         // Remove unwanted and incomplete files
-        for (const QString &unwantedFile : qAsConst(unwantedFiles)) {
+        for (const QString &unwantedFile : asConst(unwantedFiles)) {
             qDebug("Removing unwanted file: %s", qUtf8Printable(unwantedFile));
             Utils::Fs::forceRemove(unwantedFile);
             const QString parentFolder = Utils::Fs::branchPath(unwantedFile);
@@ -2367,7 +2367,7 @@ void Session::exportTorrentFile(TorrentHandle *const torrent, TorrentExportFolde
 
 void Session::generateResumeData(bool final)
 {
-    for (TorrentHandle *const torrent : qAsConst(m_torrents)) {
+    for (TorrentHandle *const torrent : asConst(m_torrents)) {
         if (!torrent->isValid()) continue;
         if (torrent->isChecking() || torrent->isPaused()) continue;
         if (!final && !torrent->needSaveResumeData()) continue;
@@ -2414,7 +2414,7 @@ void Session::saveResumeData()
 void Session::saveTorrentsQueue()
 {
     QMap<int, QString> queue; // Use QMap since it should be ordered by key
-    for (const TorrentHandle *torrent : copyAsConst(torrents())) {
+    for (const TorrentHandle *torrent : asConst(torrents())) {
         // We require actual (non-cached) queue position here!
         const int queuePos = torrent->nativeHandle().queue_position();
         if (queuePos >= 0)
@@ -2422,7 +2422,7 @@ void Session::saveTorrentsQueue()
     }
 
     QByteArray data;
-    for (const QString &hash : qAsConst(queue))
+    for (const QString &hash : asConst(queue))
         data += (hash.toLatin1() + '\n');
 
     const QString filename = QLatin1String {"queue"};
@@ -2444,10 +2444,10 @@ void Session::setDefaultSavePath(QString path)
     m_defaultSavePath = path;
 
     if (isDisableAutoTMMWhenDefaultSavePathChanged())
-        for (TorrentHandle *const torrent : copyAsConst(torrents()))
+        for (TorrentHandle *const torrent : asConst(torrents()))
             torrent->setAutoTMMEnabled(false);
     else
-        for (TorrentHandle *const torrent : copyAsConst(torrents()))
+        for (TorrentHandle *const torrent : asConst(torrents()))
             torrent->handleCategorySavePathChanged();
 }
 
@@ -2458,7 +2458,7 @@ void Session::setTempPath(QString path)
 
     m_tempPath = path;
 
-    for (TorrentHandle *const torrent : qAsConst(m_torrents))
+    for (TorrentHandle *const torrent : asConst(m_torrents))
         torrent->handleTempPathChanged();
 }
 
@@ -3776,7 +3776,7 @@ void Session::handleTorrentTrackerWarning(TorrentHandle *const torrent, const QS
 
 bool Session::hasPerTorrentRatioLimit() const
 {
-    for (TorrentHandle *const torrent : qAsConst(m_torrents))
+    for (TorrentHandle *const torrent : asConst(m_torrents))
         if (torrent->ratioLimit() >= 0) return true;
 
     return false;
@@ -3784,7 +3784,7 @@ bool Session::hasPerTorrentRatioLimit() const
 
 bool Session::hasPerTorrentSeedingTimeLimit() const
 {
-    for (TorrentHandle *const torrent : qAsConst(m_torrents))
+    for (TorrentHandle *const torrent : asConst(m_torrents))
         if (torrent->seedingTimeLimit() >= 0) return true;
 
     return false;
@@ -3928,7 +3928,7 @@ void Session::startUpTorrents()
             QMap<int, TorrentResumeData> queuedResumeData;
             int nextQueuePosition = 1;
             int numOfRemappedFiles = 0;
-            for (const QString &fastresumeName : qAsConst(fastresumes)) {
+            for (const QString &fastresumeName : asConst(fastresumes)) {
                 const QRegularExpressionMatch rxMatch = rx.match(fastresumeName);
                 if (!rxMatch.hasMatch()) continue;
 
@@ -3967,7 +3967,7 @@ void Session::startUpTorrents()
             }
 
             // starting up downloading torrents (queue position > 0)
-            for (const TorrentResumeData &torrentResumeData : qAsConst(queuedResumeData))
+            for (const TorrentResumeData &torrentResumeData : asConst(queuedResumeData))
                 startupTorrent(torrentResumeData);
 
             return;
@@ -3989,7 +3989,7 @@ void Session::startUpTorrents()
             fastresumes = queue + fastresumes.toSet().subtract(queue.toSet()).toList();
     }
 
-    for (const QString &fastresumeName : qAsConst(fastresumes)) {
+    for (const QString &fastresumeName : asConst(fastresumes)) {
         const QRegularExpressionMatch rxMatch = rx.match(fastresumeName);
         if (!rxMatch.hasMatch()) continue;
 
@@ -4554,7 +4554,7 @@ void Session::handleStateUpdateAlert(libt::state_update_alert *p)
     }
 
     m_torrentStatusReport = TorrentStatusReport();
-    for (TorrentHandle *const torrent : qAsConst(m_torrents)) {
+    for (TorrentHandle *const torrent : asConst(m_torrents)) {
         if (torrent->isDownloading())
             ++m_torrentStatusReport.nbDownloading;
         if (torrent->isUploading())
diff --git a/src/base/bittorrent/torrentcreatorthread.cpp b/src/base/bittorrent/torrentcreatorthread.cpp
index d5eb6dd5e..081a06fa9 100644
--- a/src/base/bittorrent/torrentcreatorthread.cpp
+++ b/src/base/bittorrent/torrentcreatorthread.cpp
@@ -110,7 +110,7 @@ void TorrentCreatorThread::run()
             QStringList fileNames;
             QHash<QString, boost::int64_t> fileSizeMap;
 
-            for (const auto &dir : qAsConst(dirs)) {
+            for (const auto &dir : asConst(dirs)) {
                 QStringList tmpNames;  // natural sort files within each dir
 
                 QDirIterator fileIter(dir, QDir::Files);
@@ -126,7 +126,7 @@ void TorrentCreatorThread::run()
                 fileNames += tmpNames;
             }
 
-            for (const auto &fileName : qAsConst(fileNames))
+            for (const auto &fileName : asConst(fileNames))
                 fs.add_file(fileName.toStdString(), fileSizeMap[fileName]);
         }
 
@@ -141,14 +141,14 @@ void TorrentCreatorThread::run()
 #endif
 
         // Add url seeds
-        for (QString seed : qAsConst(m_params.urlSeeds)) {
+        for (QString seed : asConst(m_params.urlSeeds)) {
             seed = seed.trimmed();
             if (!seed.isEmpty())
                 newTorrent.add_url_seed(seed.toStdString());
         }
 
         int tier = 0;
-        for (const QString &tracker : qAsConst(m_params.trackers)) {
+        for (const QString &tracker : asConst(m_params.trackers)) {
             if (tracker.isEmpty())
                 ++tier;
             else
diff --git a/src/base/bittorrent/torrenthandle.cpp b/src/base/bittorrent/torrenthandle.cpp
index 79d1c5287..6efebf01d 100644
--- a/src/base/bittorrent/torrenthandle.cpp
+++ b/src/base/bittorrent/torrenthandle.cpp
@@ -596,7 +596,7 @@ bool TorrentHandle::removeTag(const QString &tag)
 
 void TorrentHandle::removeAllTags()
 {
-    for (const QString &tag : copyAsConst(tags()))
+    for (const QString &tag : asConst(tags()))
         removeTag(tag);
 }
 
diff --git a/src/base/bittorrent/tracker.cpp b/src/base/bittorrent/tracker.cpp
index 601f06c38..7c4c514b4 100644
--- a/src/base/bittorrent/tracker.cpp
+++ b/src/base/bittorrent/tracker.cpp
@@ -136,7 +136,7 @@ void Tracker::respondToAnnounceRequest()
     QMap<QString, QByteArray> queryParams;
     // Parse GET parameters
     using namespace Utils::ByteArray;
-    for (const QByteArray &param : copyAsConst(splitToViews(m_request.query, "&"))) {
+    for (const QByteArray &param : asConst(splitToViews(m_request.query, "&"))) {
         const int sepPos = param.indexOf('=');
         if (sepPos <= 0) continue; // ignores params without name
 
diff --git a/src/base/filesystemwatcher.cpp b/src/base/filesystemwatcher.cpp
index 4c6622d5a..2cd7c9a58 100644
--- a/src/base/filesystemwatcher.cpp
+++ b/src/base/filesystemwatcher.cpp
@@ -64,7 +64,7 @@ FileSystemWatcher::FileSystemWatcher(QObject *parent)
 QStringList FileSystemWatcher::directories() const
 {
     QStringList dirs = QFileSystemWatcher::directories();
-    for (const QDir &dir : qAsConst(m_watchedFolders))
+    for (const QDir &dir : asConst(m_watchedFolders))
         dirs << dir.canonicalPath();
     return dirs;
 }
@@ -113,7 +113,7 @@ void FileSystemWatcher::scanLocalFolder(const QString &path)
 
 void FileSystemWatcher::scanNetworkFolders()
 {
-    for (const QDir &dir : qAsConst(m_watchedFolders))
+    for (const QDir &dir : asConst(m_watchedFolders))
         processTorrentsInDir(dir);
 }
 
diff --git a/src/base/global.h b/src/base/global.h
index 0284e3fe8..6e0e0370d 100644
--- a/src/base/global.h
+++ b/src/base/global.h
@@ -33,16 +33,13 @@
 
 const char C_TORRENT_FILE_EXTENSION[] = ".torrent";
 
-
-#if QT_VERSION < QT_VERSION_CHECK(5, 7, 0)
 template <typename T>
-constexpr typename std::add_const<T>::type &qAsConst(T &t) noexcept { return t; }
+constexpr typename std::add_const<T>::type &asConst(T &t) noexcept { return t; }
 
-// prevent rvalue arguments:
+// Forward rvalue as const
 template <typename T>
-void qAsConst(const T &&) = delete;
-#endif
+constexpr typename std::add_const<T>::type asConst(T &&t) noexcept { return std::move(t); }
 
-// returns a const object copy
+// Prevent const rvalue arguments
 template <typename T>
-constexpr typename std::add_const<T>::type copyAsConst(T &&t) noexcept { return std::move(t); }
+void asConst(const T &&) = delete;
diff --git a/src/base/net/downloadmanager.cpp b/src/base/net/downloadmanager.cpp
index b933bcb22..a61e102cd 100644
--- a/src/base/net/downloadmanager.cpp
+++ b/src/base/net/downloadmanager.cpp
@@ -57,7 +57,7 @@ namespace
         {
             QDateTime now = QDateTime::currentDateTime();
             QList<QNetworkCookie> cookies = Preferences::instance()->getNetworkCookies();
-            for (const QNetworkCookie &cookie : copyAsConst(Preferences::instance()->getNetworkCookies())) {
+            for (const QNetworkCookie &cookie : asConst(Preferences::instance()->getNetworkCookies())) {
                 if (cookie.isSessionCookie() || (cookie.expirationDate() <= now))
                     cookies.removeAll(cookie);
             }
@@ -69,7 +69,7 @@ namespace
         {
             QDateTime now = QDateTime::currentDateTime();
             QList<QNetworkCookie> cookies = allCookies();
-            for (const QNetworkCookie &cookie : copyAsConst(allCookies())) {
+            for (const QNetworkCookie &cookie : asConst(allCookies())) {
                 if (cookie.isSessionCookie() || (cookie.expirationDate() <= now))
                     cookies.removeAll(cookie);
             }
@@ -84,7 +84,7 @@ namespace
         {
             QDateTime now = QDateTime::currentDateTime();
             QList<QNetworkCookie> cookies = QNetworkCookieJar::cookiesForUrl(url);
-            for (const QNetworkCookie &cookie : copyAsConst(QNetworkCookieJar::cookiesForUrl(url))) {
+            for (const QNetworkCookie &cookie : asConst(QNetworkCookieJar::cookiesForUrl(url))) {
                 if (!cookie.isSessionCookie() && (cookie.expirationDate() <= now))
                     cookies.removeAll(cookie);
             }
diff --git a/src/base/net/smtp.cpp b/src/base/net/smtp.cpp
index 0127b3e14..452a3a6d0 100644
--- a/src/base/net/smtp.cpp
+++ b/src/base/net/smtp.cpp
@@ -292,7 +292,7 @@ QByteArray Smtp::encodeMimeHeader(const QString &key, const QString &value, QTex
     if (!prefix.isEmpty()) line += prefix;
     if (!value.contains("=?") && latin1->canEncode(value)) {
         bool firstWord = true;
-        for (const QByteArray &word : copyAsConst(value.toLatin1().split(' '))) {
+        for (const QByteArray &word : asConst(value.toLatin1().split(' '))) {
             if (line.size() > 78) {
                 rv = rv + line + "\r\n";
                 line.clear();
diff --git a/src/base/preferences.cpp b/src/base/preferences.cpp
index 094600f18..d5830ccc2 100644
--- a/src/base/preferences.cpp
+++ b/src/base/preferences.cpp
@@ -506,7 +506,7 @@ void Preferences::setWebUiAuthSubnetWhitelistEnabled(bool enabled)
 QList<Utils::Net::Subnet> Preferences::getWebUiAuthSubnetWhitelist() const
 {
     QList<Utils::Net::Subnet> subnets;
-    for (const QString &rawSubnet : copyAsConst(value("Preferences/WebUI/AuthSubnetWhitelist").toStringList())) {
+    for (const QString &rawSubnet : asConst(value("Preferences/WebUI/AuthSubnetWhitelist").toStringList())) {
         bool ok = false;
         const Utils::Net::Subnet subnet = Utils::Net::parseSubnet(rawSubnet.trimmed(), &ok);
         if (ok)
diff --git a/src/base/rss/rss_autodownloader.cpp b/src/base/rss/rss_autodownloader.cpp
index 7f3820885..187c78702 100644
--- a/src/base/rss/rss_autodownloader.cpp
+++ b/src/base/rss/rss_autodownloader.cpp
@@ -241,7 +241,7 @@ void AutoDownloader::importRules(const QByteArray &data, AutoDownloader::RulesFi
 QByteArray AutoDownloader::exportRulesToJSONFormat() const
 {
     QJsonObject jsonObj;
-    for (const auto &rule : copyAsConst(rules()))
+    for (const auto &rule : asConst(rules()))
         jsonObj.insert(rule.name(), rule.toJsonObject());
 
     return QJsonDocument(jsonObj).toJson();
@@ -249,14 +249,14 @@ QByteArray AutoDownloader::exportRulesToJSONFormat() const
 
 void AutoDownloader::importRulesFromJSONFormat(const QByteArray &data)
 {
-    for (const auto &rule : copyAsConst(rulesFromJSON(data)))
+    for (const auto &rule : asConst(rulesFromJSON(data)))
         insertRule(rule);
 }
 
 QByteArray AutoDownloader::exportRulesToLegacyFormat() const
 {
     QVariantHash dict;
-    for (const auto &rule : copyAsConst(rules()))
+    for (const auto &rule : asConst(rules()))
         dict[rule.name()] = rule.toLegacyDict();
 
     QByteArray data;
@@ -276,7 +276,7 @@ void AutoDownloader::importRulesFromLegacyFormat(const QByteArray &data)
     if (in.status() != QDataStream::Ok)
         throw ParsingError(tr("Invalid data format"));
 
-    for (const QVariant &val : qAsConst(dict))
+    for (const QVariant &val : asConst(dict))
         insertRule(AutoDownloadRule::fromLegacyDict(val.toHash()));
 }
 
@@ -451,7 +451,7 @@ void AutoDownloader::store()
     m_savingTimer.stop();
 
     QJsonObject jsonObj;
-    for (const auto &rule : qAsConst(m_rules))
+    for (const auto &rule : asConst(m_rules))
         jsonObj.insert(rule.name(), rule.toJsonObject());
 
     m_fileStorage->store(RulesFileName, QJsonDocument(jsonObj).toJson());
@@ -473,7 +473,7 @@ void AutoDownloader::resetProcessingQueue()
     m_processingQueue.clear();
     if (!m_processingEnabled) return;
 
-    for (Article *article : copyAsConst(Session::instance()->rootFolder()->articles())) {
+    for (Article *article : asConst(Session::instance()->rootFolder()->articles())) {
         if (!article->isRead() && !article->torrentUrl().isEmpty())
             addJobForArticle(article);
     }
diff --git a/src/base/rss/rss_autodownloadrule.cpp b/src/base/rss/rss_autodownloadrule.cpp
index cef689c1e..023b1fa14 100644
--- a/src/base/rss/rss_autodownloadrule.cpp
+++ b/src/base/rss/rss_autodownloadrule.cpp
@@ -237,7 +237,7 @@ bool AutoDownloadRule::matchesMustContainExpression(const QString &articleTitle)
 
     // Each expression is either a regex, or a set of wildcards separated by whitespace.
     // Accept if any complete expression matches.
-    for (const QString &expression : qAsConst(m_dataPtr->mustContain)) {
+    for (const QString &expression : asConst(m_dataPtr->mustContain)) {
         // A regex of the form "expr|" will always match, so do the same for wildcards
         if (matchesExpression(articleTitle, expression))
             return true;
@@ -253,7 +253,7 @@ bool AutoDownloadRule::matchesMustNotContainExpression(const QString &articleTit
 
     // Each expression is either a regex, or a set of wildcards separated by whitespace.
     // Reject if any complete expression matches.
-    for (const QString &expression : qAsConst(m_dataPtr->mustNotContain)) {
+    for (const QString &expression : asConst(m_dataPtr->mustNotContain)) {
         // A regex of the form "expr|" will always match, so do the same for wildcards
         if (matchesExpression(articleTitle, expression))
             return false;
@@ -442,7 +442,7 @@ AutoDownloadRule AutoDownloadRule::fromJsonObject(const QJsonObject &jsonObj, co
     QStringList feedURLs;
     if (feedsVal.isString())
         feedURLs << feedsVal.toString();
-    else for (const QJsonValue &urlVal : copyAsConst(feedsVal.toArray()))
+    else for (const QJsonValue &urlVal : asConst(feedsVal.toArray()))
         feedURLs << urlVal.toString();
     rule.setFeedURLs(feedURLs);
 
@@ -452,7 +452,7 @@ AutoDownloadRule AutoDownloadRule::fromJsonObject(const QJsonObject &jsonObj, co
         previouslyMatched << previouslyMatchedVal.toString();
     }
     else {
-        for (const QJsonValue &val : copyAsConst(previouslyMatchedVal.toArray()))
+        for (const QJsonValue &val : asConst(previouslyMatchedVal.toArray()))
             previouslyMatched << val.toString();
     }
     rule.setPreviouslyMatchedEpisodes(previouslyMatched);
diff --git a/src/base/rss/rss_feed.cpp b/src/base/rss/rss_feed.cpp
index 58ea929ae..b66073c55 100644
--- a/src/base/rss/rss_feed.cpp
+++ b/src/base/rss/rss_feed.cpp
@@ -109,7 +109,7 @@ QList<Article *> Feed::articles() const
 void Feed::markAsRead()
 {
     auto oldUnreadCount = m_unreadCount;
-    for (Article *article : qAsConst(m_articles)) {
+    for (Article *article : asConst(m_articles)) {
         if (!article->isRead()) {
             article->disconnect(this);
             article->markAsRead();
@@ -306,7 +306,7 @@ void Feed::loadArticlesLegacy()
     SettingsPtr qBTRSSFeeds = Profile::instance().applicationSettings(QStringLiteral("qBittorrent-rss-feeds"));
     const QVariantHash allOldItems = qBTRSSFeeds->value("old_items").toHash();
 
-    for (const QVariant &var : copyAsConst(allOldItems.value(m_url).toList())) {
+    for (const QVariant &var : asConst(allOldItems.value(m_url).toList())) {
         auto hash = var.toHash();
         // update legacy keys
         hash[Article::KeyLink] = hash.take(QLatin1String("news_link"));
@@ -329,7 +329,7 @@ void Feed::store()
     m_savingTimer.stop();
 
     QJsonArray jsonArr;
-    for (Article *article :qAsConst(m_articles))
+    for (Article *article :asConst(m_articles))
         jsonArr << article->toJsonObject();
 
     m_session->dataFileStorage()->store(m_dataFileName, QJsonDocument(jsonArr).toJson());
@@ -507,7 +507,7 @@ QJsonValue Feed::toJsonValue(bool withData) const
         jsonObj.insert(KEY_HASERROR, hasError());
 
         QJsonArray jsonArr;
-        for (Article *article : qAsConst(m_articles))
+        for (Article *article : asConst(m_articles))
             jsonArr << article->toJsonObject();
         jsonObj.insert(KEY_ARTICLES, jsonArr);
     }
diff --git a/src/base/rss/rss_folder.cpp b/src/base/rss/rss_folder.cpp
index 580272c48..c7da62dcc 100644
--- a/src/base/rss/rss_folder.cpp
+++ b/src/base/rss/rss_folder.cpp
@@ -47,7 +47,7 @@ Folder::~Folder()
 {
     emit aboutToBeDestroyed(this);
 
-    for (auto item : copyAsConst(items()))
+    for (auto item : asConst(items()))
         delete item;
 }
 
@@ -55,7 +55,7 @@ QList<Article *> Folder::articles() const
 {
     QList<Article *> news;
 
-    for (Item *item : copyAsConst(items())) {
+    for (Item *item : asConst(items())) {
         int n = news.size();
         news << item->articles();
         std::inplace_merge(news.begin(), news.begin() + n, news.end()
@@ -70,20 +70,20 @@ QList<Article *> Folder::articles() const
 int Folder::unreadCount() const
 {
     int count = 0;
-    for (Item *item : copyAsConst(items()))
+    for (Item *item : asConst(items()))
         count += item->unreadCount();
     return count;
 }
 
 void Folder::markAsRead()
 {
-    for (Item *item : copyAsConst(items()))
+    for (Item *item : asConst(items()))
         item->markAsRead();
 }
 
 void Folder::refresh()
 {
-    for (Item *item : copyAsConst(items()))
+    for (Item *item : asConst(items()))
         item->refresh();
 }
 
@@ -95,7 +95,7 @@ QList<Item *> Folder::items() const
 QJsonValue Folder::toJsonValue(bool withData) const
 {
     QJsonObject jsonObj;
-    for (Item *item : copyAsConst(items()))
+    for (Item *item : asConst(items()))
         jsonObj.insert(item->name(), item->toJsonValue(withData));
 
     return jsonObj;
@@ -108,7 +108,7 @@ void Folder::handleItemUnreadCountChanged()
 
 void Folder::cleanup()
 {
-    for (Item *item : copyAsConst(items()))
+    for (Item *item : asConst(items()))
         item->cleanup();
 }
 
@@ -123,7 +123,7 @@ void Folder::addItem(Item *item)
     connect(item, &Item::articleAboutToBeRemoved, this, &Item::articleAboutToBeRemoved);
     connect(item, &Item::unreadCountChanged, this, &Folder::handleItemUnreadCountChanged);
 
-    for (auto article : copyAsConst(item->articles()))
+    for (auto article : asConst(item->articles()))
         emit newArticle(article);
 
     if (item->unreadCount() > 0)
@@ -134,7 +134,7 @@ void Folder::removeItem(Item *item)
 {
     Q_ASSERT(m_items.contains(item));
 
-    for (auto article : copyAsConst(item->articles()))
+    for (auto article : asConst(item->articles()))
         emit articleAboutToBeRemoved(article);
 
     item->disconnect(this);
diff --git a/src/base/rss/rss_session.cpp b/src/base/rss/rss_session.cpp
index 1564db247..a2b546452 100644
--- a/src/base/rss/rss_session.cpp
+++ b/src/base/rss/rss_session.cpp
@@ -284,7 +284,7 @@ void Session::load()
 void Session::loadFolder(const QJsonObject &jsonObj, Folder *folder)
 {
     bool updated = false;
-    for (const QString &key : copyAsConst(jsonObj.keys())) {
+    for (const QString &key : asConst(jsonObj.keys())) {
         const QJsonValue val {jsonObj[key]};
         if (val.isString()) {
             // previous format (reduced form) doesn't contain UID
@@ -356,7 +356,7 @@ void Session::loadLegacy()
         const QString parentFolderPath = Item::parentPath(legacyPath);
         const QString feedUrl = Item::relativeName(legacyPath);
 
-        for (const QString &folderPath : copyAsConst(Item::expandPath(parentFolderPath)))
+        for (const QString &folderPath : asConst(Item::expandPath(parentFolderPath)))
             addFolder(folderPath);
 
         const QString feedPath = feedAliases[i].isEmpty()
diff --git a/src/base/scanfoldersmodel.cpp b/src/base/scanfoldersmodel.cpp
index 20a399220..5b0ca4573 100644
--- a/src/base/scanfoldersmodel.cpp
+++ b/src/base/scanfoldersmodel.cpp
@@ -327,7 +327,7 @@ void ScanFoldersModel::makePersistent()
 {
     QVariantHash dirs;
 
-    for (const PathData *pathData : qAsConst(m_pathList)) {
+    for (const PathData *pathData : asConst(m_pathList)) {
         if (pathData->downloadType == CUSTOM_LOCATION)
             dirs.insert(Utils::Fs::fromNativePath(pathData->watchPath), Utils::Fs::fromNativePath(pathData->downloadPath));
         else
diff --git a/src/base/search/searchhandler.cpp b/src/base/search/searchhandler.cpp
index 57f8e3bb4..24d97e615 100644
--- a/src/base/search/searchhandler.cpp
+++ b/src/base/search/searchhandler.cpp
@@ -139,7 +139,7 @@ void SearchHandler::readSearchOutput()
     m_searchResultLineTruncated = lines.takeLast().trimmed();
 
     QList<SearchResult> searchResultList;
-    for (const QByteArray &line : qAsConst(lines)) {
+    for (const QByteArray &line : asConst(lines)) {
         SearchResult searchResult;
         if (parseSearchResult(QString::fromUtf8(line), searchResult))
             searchResultList << searchResult;
diff --git a/src/base/search/searchpluginmanager.cpp b/src/base/search/searchpluginmanager.cpp
index 2a2d4484e..fad3cf737 100644
--- a/src/base/search/searchpluginmanager.cpp
+++ b/src/base/search/searchpluginmanager.cpp
@@ -65,7 +65,7 @@ namespace
         while (iter.hasNext())
             dirs += iter.next();
 
-        for (const QString &dir : qAsConst(dirs)) {
+        for (const QString &dir : asConst(dirs)) {
             // python 3: remove "__pycache__" folders
             if (dir.endsWith("/__pycache__")) {
                 Utils::Fs::removeDirRecursive(dir);
@@ -120,7 +120,7 @@ QStringList SearchPluginManager::allPlugins() const
 QStringList SearchPluginManager::enabledPlugins() const
 {
     QStringList plugins;
-    for (const PluginInfo *plugin : qAsConst(m_plugins)) {
+    for (const PluginInfo *plugin : asConst(m_plugins)) {
         if (plugin->enabled)
             plugins << plugin->name;
     }
@@ -131,7 +131,7 @@ QStringList SearchPluginManager::enabledPlugins() const
 QStringList SearchPluginManager::supportedCategories() const
 {
     QStringList result;
-    for (const PluginInfo *plugin : qAsConst(m_plugins)) {
+    for (const PluginInfo *plugin : asConst(m_plugins)) {
         if (plugin->enabled) {
             for (const QString &cat : plugin->supportedCategories) {
                 if (!result.contains(cat))
@@ -154,7 +154,7 @@ QStringList SearchPluginManager::getPluginCategories(const QString &pluginName)
         plugins << pluginName.trimmed();
 
     QSet<QString> categories;
-    for (const QString &name : qAsConst(plugins)) {
+    for (const QString &name : asConst(plugins)) {
         const PluginInfo *plugin = pluginInfo(name);
         if (!plugin) continue; // plugin wasn't found
         for (const QString &category : plugin->supportedCategories)
diff --git a/src/base/settingsstorage.cpp b/src/base/settingsstorage.cpp
index 96146103b..bf909a5f6 100644
--- a/src/base/settingsstorage.cpp
+++ b/src/base/settingsstorage.cpp
@@ -287,7 +287,7 @@ QString TransactionalSettings::deserialize(const QString &name, QVariantHash &da
     // Copy everything into memory. This means even keys inserted in the file manually
     // or that we don't touch directly in this code (eg disabled by ifdef). This ensures
     // that they will be copied over when save our settings to disk.
-    for (const QString &key : copyAsConst(settings->allKeys()))
+    for (const QString &key : asConst(settings->allKeys()))
         data.insert(key, settings->value(key));
 
     return settings->fileName();
diff --git a/src/base/utils/fs.cpp b/src/base/utils/fs.cpp
index 338acce99..eabe5a91d 100644
--- a/src/base/utils/fs.cpp
+++ b/src/base/utils/fs.cpp
@@ -133,7 +133,7 @@ bool Utils::Fs::smartRemoveEmptyFolderTree(const QString &path)
     std::sort(dirList.begin(), dirList.end()
               , [](const QString &l, const QString &r) { return l.count('/') > r.count('/'); });
 
-    for (const QString &p : qAsConst(dirList)) {
+    for (const QString &p : asConst(dirList)) {
         // remove unwanted files
         for (const QString &f : deleteFilesList) {
             forceRemove(p + f);
diff --git a/src/gui/addnewtorrentdialog.cpp b/src/gui/addnewtorrentdialog.cpp
index 9c1ea8c1a..8f456fa44 100644
--- a/src/gui/addnewtorrentdialog.cpp
+++ b/src/gui/addnewtorrentdialog.cpp
@@ -143,7 +143,7 @@ AddNewTorrentDialog::AddNewTorrentDialog(const BitTorrent::AddTorrentParams &inP
         m_ui->categoryComboBox->addItem(defaultCategory);
     m_ui->categoryComboBox->addItem("");
 
-    for (const QString &category : qAsConst(categories))
+    for (const QString &category : asConst(categories))
         if (category != defaultCategory && category != m_torrentParams.category)
             m_ui->categoryComboBox->addItem(category);
 
@@ -398,7 +398,7 @@ void AddNewTorrentDialog::saveSavePathHistory() const
     // Get current history
     QStringList history = settings()->loadValue(KEY_SAVEPATHHISTORY).toStringList();
     QVector<QDir> historyDirs;
-    for (const QString &path : qAsConst(history))
+    for (const QString &path : asConst(history))
         historyDirs << QDir {path};
 
     const QDir selectedSavePath {m_ui->savePath->selectedPath()};
diff --git a/src/gui/advancedsettings.cpp b/src/gui/advancedsettings.cpp
index feb497e8c..76b03542b 100644
--- a/src/gui/advancedsettings.cpp
+++ b/src/gui/advancedsettings.cpp
@@ -287,7 +287,7 @@ void AdvancedSettings::updateInterfaceAddressCombo()
     };
 
     if (ifaceName.isEmpty()) {
-        for (const QHostAddress &ip : copyAsConst(QNetworkInterface::allAddresses()))
+        for (const QHostAddress &ip : asConst(QNetworkInterface::allAddresses()))
             populateCombo(ip.toString(), ip.protocol());
     }
     else {
@@ -426,7 +426,7 @@ void AdvancedSettings::loadAdvancedSettings()
     const QString currentInterface = session->networkInterface();
     bool interfaceExists = currentInterface.isEmpty();
     int i = 1;
-    for (const QNetworkInterface &iface : copyAsConst(QNetworkInterface::allInterfaces())) {
+    for (const QNetworkInterface &iface : asConst(QNetworkInterface::allInterfaces())) {
         // This line fixes a Qt bug => https://bugreports.qt.io/browse/QTBUG-52633
         // Tested in Qt 5.6.0. For more info see:
         // https://github.com/qbittorrent/qBittorrent/issues/5131
diff --git a/src/gui/categoryfiltermodel.cpp b/src/gui/categoryfiltermodel.cpp
index ad4c84869..5bb8a2b74 100644
--- a/src/gui/categoryfiltermodel.cpp
+++ b/src/gui/categoryfiltermodel.cpp
@@ -408,7 +408,7 @@ void CategoryFilterModel::populate()
         const QString &category = i.key();
         if (m_isSubcategoriesEnabled) {
             CategoryModelItem *parent = m_rootItem;
-            for (const QString &subcat : copyAsConst(session->expandCategory(category))) {
+            for (const QString &subcat : asConst(session->expandCategory(category))) {
                 const QString subcatName = shortName(subcat);
                 if (!parent->hasChild(subcatName)) {
                     new CategoryModelItem(
@@ -437,7 +437,7 @@ CategoryModelItem *CategoryFilterModel::findItem(const QString &fullName) const
         return m_rootItem->child(fullName);
 
     CategoryModelItem *item = m_rootItem;
-    for (const QString &subcat : copyAsConst(BitTorrent::Session::expandCategory(fullName))) {
+    for (const QString &subcat : asConst(BitTorrent::Session::expandCategory(fullName))) {
         const QString subcatName = shortName(subcat);
         if (!item->hasChild(subcatName)) return nullptr;
         item = item->child(subcatName);
diff --git a/src/gui/categoryfilterwidget.cpp b/src/gui/categoryfilterwidget.cpp
index 8f5a1335d..4c7458608 100644
--- a/src/gui/categoryfilterwidget.cpp
+++ b/src/gui/categoryfilterwidget.cpp
@@ -231,7 +231,7 @@ void CategoryFilterWidget::removeCategory()
 void CategoryFilterWidget::removeUnusedCategories()
 {
     auto session = BitTorrent::Session::instance();
-    for (const QString &category : copyAsConst(session->categories().keys())) {
+    for (const QString &category : asConst(session->categories().keys())) {
         if (model()->data(static_cast<CategoryFilterProxyModel *>(model())->index(category), Qt::UserRole) == 0)
             session->removeCategory(category);
     }
diff --git a/src/gui/cookiesdialog.cpp b/src/gui/cookiesdialog.cpp
index 0d6af6721..d848e00a5 100644
--- a/src/gui/cookiesdialog.cpp
+++ b/src/gui/cookiesdialog.cpp
@@ -101,6 +101,6 @@ void CookiesDialog::onButtonDeleteClicked()
         }
     );
 
-    for (const QModelIndex &idx : qAsConst(idxs))
+    for (const QModelIndex &idx : asConst(idxs))
         m_cookiesModel->removeRow(idx.row());
 }
diff --git a/src/gui/executionlogwidget.cpp b/src/gui/executionlogwidget.cpp
index fb90aa63f..8e0980c67 100644
--- a/src/gui/executionlogwidget.cpp
+++ b/src/gui/executionlogwidget.cpp
@@ -53,9 +53,9 @@ ExecutionLogWidget::ExecutionLogWidget(QWidget *parent, const Log::MsgTypes &typ
     m_ui->tabBan->layout()->addWidget(m_peerList);
 
     const Logger *const logger = Logger::instance();
-    for (const Log::Msg &msg : copyAsConst(logger->getMessages()))
+    for (const Log::Msg &msg : asConst(logger->getMessages()))
         addLogMessage(msg);
-    for (const Log::Peer &peer : copyAsConst(logger->getPeers()))
+    for (const Log::Peer &peer : asConst(logger->getPeers()))
         addPeerMessage(peer);
     connect(logger, &Logger::newLogMessage, this, &ExecutionLogWidget::addLogMessage);
     connect(logger, &Logger::newLogPeer, this, &ExecutionLogWidget::addPeerMessage);
diff --git a/src/gui/ipsubnetwhitelistoptionsdialog.cpp b/src/gui/ipsubnetwhitelistoptionsdialog.cpp
index 65eb905a4..ad0c075c7 100644
--- a/src/gui/ipsubnetwhitelistoptionsdialog.cpp
+++ b/src/gui/ipsubnetwhitelistoptionsdialog.cpp
@@ -46,7 +46,7 @@ IPSubnetWhitelistOptionsDialog::IPSubnetWhitelistOptionsDialog(QWidget *parent)
     m_ui->setupUi(this);
 
     QStringList authSubnetWhitelistStringList;
-    for (const Utils::Net::Subnet &subnet : copyAsConst(Preferences::instance()->getWebUiAuthSubnetWhitelist()))
+    for (const Utils::Net::Subnet &subnet : asConst(Preferences::instance()->getWebUiAuthSubnetWhitelist()))
         authSubnetWhitelistStringList << Utils::Net::subnetToString(subnet);
     m_model = new QStringListModel(authSubnetWhitelistStringList, this);
 
@@ -99,7 +99,7 @@ void IPSubnetWhitelistOptionsDialog::on_buttonWhitelistIPSubnet_clicked()
 
 void IPSubnetWhitelistOptionsDialog::on_buttonDeleteIPSubnet_clicked()
 {
-    for (const auto &i : copyAsConst(m_ui->whitelistedIPSubnetList->selectionModel()->selectedIndexes()))
+    for (const auto &i : asConst(m_ui->whitelistedIPSubnetList->selectionModel()->selectedIndexes()))
         m_sortFilter->removeRow(i.row());
 
     m_modified = true;
diff --git a/src/gui/loglistwidget.cpp b/src/gui/loglistwidget.cpp
index 93abc8ae0..f21b36c70 100644
--- a/src/gui/loglistwidget.cpp
+++ b/src/gui/loglistwidget.cpp
@@ -98,7 +98,7 @@ void LogListWidget::copySelection()
 {
     static const QRegularExpression htmlTag("<[^>]+>");
     QStringList strings;
-    for (QListWidgetItem* it : copyAsConst(selectedItems()))
+    for (QListWidgetItem* it : asConst(selectedItems()))
         strings << static_cast<QLabel*>(itemWidget(it))->text().remove(htmlTag);
 
     QApplication::clipboard()->setText(strings.join('\n'));
diff --git a/src/gui/mainwindow.cpp b/src/gui/mainwindow.cpp
index 842e57c34..d1fb3710b 100644
--- a/src/gui/mainwindow.cpp
+++ b/src/gui/mainwindow.cpp
@@ -284,7 +284,7 @@ MainWindow::MainWindow(QWidget *parent)
     m_prioSeparatorMenu = m_ui->menuEdit->insertSeparator(m_ui->actionTopPriority);
 
 #ifdef Q_OS_MAC
-    for (QAction *action : copyAsConst(m_ui->toolBar->actions())) {
+    for (QAction *action : asConst(m_ui->toolBar->actions())) {
         if (action->isSeparator()) {
             QWidget *spacer = new QWidget(this);
             spacer->setSizePolicy(QSizePolicy::Fixed, QSizePolicy::Fixed);
@@ -1239,7 +1239,7 @@ bool MainWindow::event(QEvent *e)
                 qDebug() << "Has active window:" << (qApp->activeWindow() != nullptr);
                 // Check if there is a modal window
                 bool hasModalWindow = false;
-                for (QWidget *widget : copyAsConst(QApplication::allWidgets())) {
+                for (QWidget *widget : asConst(QApplication::allWidgets())) {
                     if (widget->isModal()) {
                         hasModalWindow = true;
                         break;
@@ -1285,7 +1285,7 @@ void MainWindow::dropEvent(QDropEvent *event)
     // remove scheme
     QStringList files;
     if (event->mimeData()->hasUrls()) {
-        for (const QUrl &url : copyAsConst(event->mimeData()->urls())) {
+        for (const QUrl &url : asConst(event->mimeData()->urls())) {
             if (url.isEmpty())
                 continue;
 
@@ -1300,7 +1300,7 @@ void MainWindow::dropEvent(QDropEvent *event)
 
     // differentiate ".torrent" files/links & magnet links from others
     QStringList torrentFiles, otherFiles;
-    for (const QString &file : qAsConst(files)) {
+    for (const QString &file : asConst(files)) {
         const bool isTorrentLink = (file.startsWith("magnet:", Qt::CaseInsensitive)
             || file.endsWith(C_TORRENT_FILE_EXTENSION, Qt::CaseInsensitive)
             || Utils::Misc::isUrl(file));
@@ -1312,7 +1312,7 @@ void MainWindow::dropEvent(QDropEvent *event)
 
     // Download torrents
     const bool useTorrentAdditionDialog = AddNewTorrentDialog::isEnabled();
-    for (const QString &file : qAsConst(torrentFiles)) {
+    for (const QString &file : asConst(torrentFiles)) {
         if (useTorrentAdditionDialog)
             AddNewTorrentDialog::show(file, this);
         else
@@ -1321,7 +1321,7 @@ void MainWindow::dropEvent(QDropEvent *event)
     if (!torrentFiles.isEmpty()) return;
 
     // Create torrent
-    for (const QString &file : qAsConst(otherFiles)) {
+    for (const QString &file : asConst(otherFiles)) {
         createTorrentTriggered(file);
 
         // currently only hande the first entry
@@ -1333,7 +1333,7 @@ void MainWindow::dropEvent(QDropEvent *event)
 // Decode if we accept drag 'n drop or not
 void MainWindow::dragEnterEvent(QDragEnterEvent *event)
 {
-    for (const QString &mime : copyAsConst(event->mimeData()->formats()))
+    for (const QString &mime : asConst(event->mimeData()->formats()))
         qDebug("mimeData: %s", mime.toLocal8Bit().data());
     if (event->mimeData()->hasFormat("text/plain") || event->mimeData()->hasFormat("text/uri-list"))
         event->acceptProposedAction();
diff --git a/src/gui/optionsdialog.cpp b/src/gui/optionsdialog.cpp
index 07e8cdfc9..a45412a7e 100644
--- a/src/gui/optionsdialog.cpp
+++ b/src/gui/optionsdialog.cpp
@@ -439,9 +439,9 @@ OptionsDialog::OptionsDialog(QWidget *parent)
 
     // disable mouse wheel event on widgets to avoid mis-selection
     WheelEventEater *wheelEventEater = new WheelEventEater(this);
-    for (QComboBox *widget : copyAsConst(findChildren<QComboBox *>()))
+    for (QComboBox *widget : asConst(findChildren<QComboBox *>()))
         widget->installEventFilter(wheelEventEater);
-    for (QSpinBox *widget : copyAsConst(findChildren<QSpinBox *>()))
+    for (QSpinBox *widget : asConst(findChildren<QSpinBox *>()))
         widget->installEventFilter(wheelEventEater);
 
     loadWindowState();
@@ -479,7 +479,7 @@ OptionsDialog::~OptionsDialog()
 
     saveWindowState();
 
-    for (const QString &path : qAsConst(m_addedScanDirs))
+    for (const QString &path : asConst(m_addedScanDirs))
         ScanFoldersModel::instance()->removePath(path);
     ScanFoldersModel::instance()->configure(); // reloads "removed" paths
     delete m_ui;
diff --git a/src/gui/properties/peersadditiondialog.cpp b/src/gui/properties/peersadditiondialog.cpp
index 6ae13a79f..c39016a5f 100644
--- a/src/gui/properties/peersadditiondialog.cpp
+++ b/src/gui/properties/peersadditiondialog.cpp
@@ -62,7 +62,7 @@ void PeersAdditionDialog::validateInput()
                     QMessageBox::Ok);
         return;
     }
-    for (const QString &peer : copyAsConst(m_ui->textEditPeers->toPlainText().trimmed().split('\n'))) {
+    for (const QString &peer : asConst(m_ui->textEditPeers->toPlainText().trimmed().split('\n'))) {
         BitTorrent::PeerAddress addr = parsePeer(peer);
         if (!addr.ip.isNull()) {
             m_peersList.append(addr);
diff --git a/src/gui/properties/proptabbar.cpp b/src/gui/properties/proptabbar.cpp
index 6d972c999..46153b659 100644
--- a/src/gui/properties/proptabbar.cpp
+++ b/src/gui/properties/proptabbar.cpp
@@ -103,7 +103,7 @@ PropTabBar::PropTabBar(QWidget *parent)
     connect(m_btnGroup, static_cast<void (QButtonGroup::*)(int)>(&QButtonGroup::buttonClicked)
             , this, &PropTabBar::setCurrentIndex);
     // Disable buttons focus
-    for (QAbstractButton *btn : copyAsConst(m_btnGroup->buttons()))
+    for (QAbstractButton *btn : asConst(m_btnGroup->buttons()))
         btn->setFocusPolicy(Qt::NoFocus);
 }
 
diff --git a/src/gui/properties/speedplotview.cpp b/src/gui/properties/speedplotview.cpp
index 313388c45..8dee762df 100644
--- a/src/gui/properties/speedplotview.cpp
+++ b/src/gui/properties/speedplotview.cpp
@@ -348,7 +348,7 @@ void SpeedPlotView::paintEvent(QPaintEvent *)
 
     double legendHeight = 0;
     int legendWidth = 0;
-    for (const auto &property : qAsConst(m_properties)) {
+    for (const auto &property : asConst(m_properties)) {
         if (!property.enable)
             continue;
 
@@ -363,7 +363,7 @@ void SpeedPlotView::paintEvent(QPaintEvent *)
     painter.fillRect(legendBackgroundRect, legendBackgroundColor);
 
     i = 0;
-    for (const auto &property : qAsConst(m_properties)) {
+    for (const auto &property : asConst(m_properties)) {
         if (!property.enable)
             continue;
 
diff --git a/src/gui/properties/trackerlistwidget.cpp b/src/gui/properties/trackerlistwidget.cpp
index 510399190..f2c85fbda 100644
--- a/src/gui/properties/trackerlistwidget.cpp
+++ b/src/gui/properties/trackerlistwidget.cpp
@@ -290,7 +290,7 @@ void TrackerListWidget::loadStickyItems(BitTorrent::TorrentHandle *const torrent
     // XXX: libtorrent should provide this info...
     // Count peers from DHT, PeX, LSD
     uint seedsDHT = 0, seedsPeX = 0, seedsLSD = 0, peersDHT = 0, peersPeX = 0, peersLSD = 0;
-    for (const BitTorrent::PeerInfo &peer : copyAsConst(torrent->peers())) {
+    for (const BitTorrent::PeerInfo &peer : asConst(torrent->peers())) {
         if (peer.isConnecting()) continue;
 
         if (peer.fromDHT()) {
@@ -332,7 +332,7 @@ void TrackerListWidget::loadTrackers()
     // Load actual trackers information
     QHash<QString, BitTorrent::TrackerInfo> trackerData = torrent->trackerInfos();
     QStringList oldTrackerURLs = m_trackerItems.keys();
-    for (const BitTorrent::TrackerEntry &entry : copyAsConst(torrent->trackers())) {
+    for (const BitTorrent::TrackerEntry &entry : asConst(torrent->trackers())) {
         QString trackerURL = entry.url();
         QTreeWidgetItem *item = m_trackerItems.value(trackerURL, nullptr);
         if (!item) {
@@ -384,7 +384,7 @@ void TrackerListWidget::loadTrackers()
         item->setTextAlignment(COL_DOWNLOADED, (Qt::AlignRight | Qt::AlignVCenter));
     }
     // Remove old trackers
-    for (const QString &tracker : qAsConst(oldTrackerURLs))
+    for (const QString &tracker : asConst(oldTrackerURLs))
         delete m_trackerItems.take(tracker);
 }
 
@@ -395,7 +395,7 @@ void TrackerListWidget::askForTrackers()
     if (!torrent) return;
 
     QList<BitTorrent::TrackerEntry> trackers;
-    for (const QString &tracker : copyAsConst(TrackersAdditionDialog::askForTrackers(this, torrent)))
+    for (const QString &tracker : asConst(TrackersAdditionDialog::askForTrackers(this, torrent)))
         trackers << tracker;
 
     torrent->addTrackers(trackers);
diff --git a/src/gui/properties/trackersadditiondialog.cpp b/src/gui/properties/trackersadditiondialog.cpp
index 884dee8ee..518fe9bf7 100644
--- a/src/gui/properties/trackersadditiondialog.cpp
+++ b/src/gui/properties/trackersadditiondialog.cpp
@@ -60,7 +60,7 @@ TrackersAdditionDialog::~TrackersAdditionDialog()
 QStringList TrackersAdditionDialog::newTrackers() const
 {
     QStringList cleanTrackers;
-    for (QString url : copyAsConst(m_ui->textEditTrackersList->toPlainText().split('\n'))) {
+    for (QString url : asConst(m_ui->textEditTrackersList->toPlainText().split('\n'))) {
         url = url.trimmed();
         if (!url.isEmpty())
             cleanTrackers << url;
diff --git a/src/gui/rss/articlelistwidget.cpp b/src/gui/rss/articlelistwidget.cpp
index 8e39ca815..898127517 100644
--- a/src/gui/rss/articlelistwidget.cpp
+++ b/src/gui/rss/articlelistwidget.cpp
@@ -69,7 +69,7 @@ void ArticleListWidget::setRSSItem(RSS::Item *rssItem, bool unreadOnly)
         connect(m_rssItem, &RSS::Item::articleRead, this, &ArticleListWidget::handleArticleRead);
         connect(m_rssItem, &RSS::Item::articleAboutToBeRemoved, this, &ArticleListWidget::handleArticleAboutToBeRemoved);
 
-        for (const auto article : copyAsConst(rssItem->articles())) {
+        for (const auto article : asConst(rssItem->articles())) {
             if (!(m_unreadOnly && article->isRead())) {
                 auto item = createItem(article);
                 addItem(item);
diff --git a/src/gui/rss/automatedrssdownloader.cpp b/src/gui/rss/automatedrssdownloader.cpp
index 239745539..dccc5fd07 100644
--- a/src/gui/rss/automatedrssdownloader.cpp
+++ b/src/gui/rss/automatedrssdownloader.cpp
@@ -132,7 +132,7 @@ AutomatedRssDownloader::AutomatedRssDownloader(QWidget *parent)
     loadFeedList();
 
     m_ui->listRules->blockSignals(true);
-    for (const RSS::AutoDownloadRule &rule : copyAsConst(RSS::AutoDownloader::instance()->rules()))
+    for (const RSS::AutoDownloadRule &rule : asConst(RSS::AutoDownloader::instance()->rules()))
         createRuleItem(rule);
     m_ui->listRules->blockSignals(false);
 
@@ -182,7 +182,7 @@ void AutomatedRssDownloader::loadFeedList()
 {
     const QSignalBlocker feedListSignalBlocker(m_ui->listFeeds);
 
-    for (const auto feed : copyAsConst(RSS::Session::instance()->feeds())) {
+    for (const auto feed : asConst(RSS::Session::instance()->feeds())) {
         QListWidgetItem *item = new QListWidgetItem(feed->name(), m_ui->listFeeds);
         item->setData(Qt::UserRole, feed->url());
         item->setFlags(item->flags() | Qt::ItemIsUserCheckable | Qt::ItemIsTristate);
@@ -212,7 +212,7 @@ void AutomatedRssDownloader::updateFeedList()
         bool allEnabled = true;
         bool anyEnabled = false;
 
-        for (const QListWidgetItem *ruleItem : qAsConst(selection)) {
+        for (const QListWidgetItem *ruleItem : asConst(selection)) {
             auto rule = RSS::AutoDownloader::instance()->ruleByName(ruleItem->text());
             if (rule.feedURLs().contains(feedURL))
                 anyEnabled = true;
@@ -549,7 +549,7 @@ void AutomatedRssDownloader::clearSelectedRuleDownloadedEpisodeList()
 void AutomatedRssDownloader::handleFeedCheckStateChange(QListWidgetItem *feedItem)
 {
     const QString feedURL = feedItem->data(Qt::UserRole).toString();
-    for (QListWidgetItem *ruleItem : copyAsConst(m_ui->listRules->selectedItems())) {
+    for (QListWidgetItem *ruleItem : asConst(m_ui->listRules->selectedItems())) {
         RSS::AutoDownloadRule rule = (ruleItem == m_currentRuleItem
                                        ? m_currentRule
                                        : RSS::AutoDownloader::instance()->ruleByName(ruleItem->text()));
@@ -573,16 +573,16 @@ void AutomatedRssDownloader::updateMatchingArticles()
 {
     m_ui->treeMatchingArticles->clear();
 
-    for (const QListWidgetItem *ruleItem : copyAsConst(m_ui->listRules->selectedItems())) {
+    for (const QListWidgetItem *ruleItem : asConst(m_ui->listRules->selectedItems())) {
         RSS::AutoDownloadRule rule = (ruleItem == m_currentRuleItem
                                        ? m_currentRule
                                        : RSS::AutoDownloader::instance()->ruleByName(ruleItem->text()));
-        for (const QString &feedURL : copyAsConst(rule.feedURLs())) {
+        for (const QString &feedURL : asConst(rule.feedURLs())) {
             auto feed = RSS::Session::instance()->feedByURL(feedURL);
             if (!feed) continue; // feed doesn't exist
 
             QStringList matchingArticles;
-            for (const auto article : copyAsConst(feed->articles()))
+            for (const auto article : asConst(feed->articles()))
                 if (rule.matches(article->data()))
                     matchingArticles << article->title();
             if (!matchingArticles.isEmpty())
@@ -676,10 +676,10 @@ void AutomatedRssDownloader::updateMustLineValidity()
         if (isRegex)
             tokens << text;
         else
-            for (const QString &token : copyAsConst(text.split('|')))
+            for (const QString &token : asConst(text.split('|')))
                 tokens << Utils::String::wildcardToRegex(token);
 
-        for (const QString &token : qAsConst(tokens)) {
+        for (const QString &token : asConst(tokens)) {
             QRegularExpression reg(token, QRegularExpression::CaseInsensitiveOption);
             if (!reg.isValid()) {
                 if (isRegex)
@@ -714,10 +714,10 @@ void AutomatedRssDownloader::updateMustNotLineValidity()
         if (isRegex)
             tokens << text;
         else
-            for (const QString &token : copyAsConst(text.split('|')))
+            for (const QString &token : asConst(text.split('|')))
                 tokens << Utils::String::wildcardToRegex(token);
 
-        for (const QString &token : qAsConst(tokens)) {
+        for (const QString &token : asConst(tokens)) {
             QRegularExpression reg(token, QRegularExpression::CaseInsensitiveOption);
             if (!reg.isValid()) {
                 if (isRegex)
diff --git a/src/gui/rss/feedlistwidget.cpp b/src/gui/rss/feedlistwidget.cpp
index 8be6c9ee2..ce8f1698f 100644
--- a/src/gui/rss/feedlistwidget.cpp
+++ b/src/gui/rss/feedlistwidget.cpp
@@ -220,7 +220,7 @@ void FeedListWidget::dropEvent(QDropEvent *event)
                                : RSS::Session::instance()->rootFolder());
 
     // move as much items as possible
-    for (QTreeWidgetItem *srcItem : copyAsConst(selectedItems())) {
+    for (QTreeWidgetItem *srcItem : asConst(selectedItems())) {
         auto rssItem = getRSSItem(srcItem);
         RSS::Session::instance()->moveItem(rssItem, RSS::Item::joinPath(destFolder->path(), rssItem->name()));
     }
@@ -265,7 +265,7 @@ QTreeWidgetItem *FeedListWidget::createItem(RSS::Item *rssItem, QTreeWidgetItem
 
 void FeedListWidget::fill(QTreeWidgetItem *parent, RSS::Folder *rssParent)
 {
-    for (const auto rssItem : copyAsConst(rssParent->items())) {
+    for (const auto rssItem : asConst(rssParent->items())) {
         QTreeWidgetItem *item = createItem(rssItem, parent);
         // Recursive call if this is a folder.
         if (auto folder = qobject_cast<RSS::Folder *>(rssItem))
diff --git a/src/gui/rss/rsswidget.cpp b/src/gui/rss/rsswidget.cpp
index 03145bcdb..77b8eb4f6 100644
--- a/src/gui/rss/rsswidget.cpp
+++ b/src/gui/rss/rsswidget.cpp
@@ -187,7 +187,7 @@ void RSSWidget::displayItemsListMenu(const QPoint &)
 {
     bool hasTorrent = false;
     bool hasLink = false;
-    for (const QListWidgetItem *item : copyAsConst(m_articleListWidget->selectedItems())) {
+    for (const QListWidgetItem *item : asConst(m_articleListWidget->selectedItems())) {
         auto article = reinterpret_cast<RSS::Article *>(item->data(Qt::UserRole).value<quintptr>());
         Q_ASSERT(article);
 
@@ -309,7 +309,7 @@ void RSSWidget::loadFoldersOpenState()
     const QStringList openedFolders = Preferences::instance()->getRssOpenFolders();
     for (const QString &varPath : openedFolders) {
         QTreeWidgetItem *parent = nullptr;
-        for (const QString &name : copyAsConst(varPath.split('\\'))) {
+        for (const QString &name : asConst(varPath.split('\\'))) {
             int nbChildren = (parent ? parent->childCount() : m_feedListWidget->topLevelItemCount());
             for (int i = 0; i < nbChildren; ++i) {
                 QTreeWidgetItem *child = (parent ? parent->child(i) : m_feedListWidget->topLevelItem(i));
@@ -326,7 +326,7 @@ void RSSWidget::loadFoldersOpenState()
 void RSSWidget::saveFoldersOpenState()
 {
     QStringList openedFolders;
-    for (QTreeWidgetItem *item : copyAsConst(m_feedListWidget->getAllOpenedFolders()))
+    for (QTreeWidgetItem *item : asConst(m_feedListWidget->getAllOpenedFolders()))
         openedFolders << m_feedListWidget->itemPath(item);
     Preferences::instance()->setRssOpenFolders(openedFolders);
 }
@@ -338,7 +338,7 @@ void RSSWidget::refreshAllFeeds()
 
 void RSSWidget::downloadSelectedTorrents()
 {
-    for (QListWidgetItem *item : copyAsConst(m_articleListWidget->selectedItems())) {
+    for (QListWidgetItem *item : asConst(m_articleListWidget->selectedItems())) {
         auto article = reinterpret_cast<RSS::Article *>(item->data(Qt::UserRole).value<quintptr>());
         Q_ASSERT(article);
 
@@ -357,7 +357,7 @@ void RSSWidget::downloadSelectedTorrents()
 // open the url of the selected RSS articles in the Web browser
 void RSSWidget::openSelectedArticlesUrls()
 {
-    for (QListWidgetItem *item : copyAsConst(m_articleListWidget->selectedItems())) {
+    for (QListWidgetItem *item : asConst(m_articleListWidget->selectedItems())) {
         auto article = reinterpret_cast<RSS::Article *>(item->data(Qt::UserRole).value<quintptr>());
         Q_ASSERT(article);
 
@@ -398,7 +398,7 @@ void RSSWidget::renameSelectedRSSItem()
 
 void RSSWidget::refreshSelectedItems()
 {
-    for (QTreeWidgetItem *item : copyAsConst(m_feedListWidget->selectedItems())) {
+    for (QTreeWidgetItem *item : asConst(m_feedListWidget->selectedItems())) {
         if (item == m_feedListWidget->stickyUnreadItem()) {
             refreshAllFeeds();
             return;
@@ -411,7 +411,7 @@ void RSSWidget::refreshSelectedItems()
 void RSSWidget::copySelectedFeedsURL()
 {
     QStringList URLs;
-    for (QTreeWidgetItem *item : copyAsConst(m_feedListWidget->selectedItems())) {
+    for (QTreeWidgetItem *item : asConst(m_feedListWidget->selectedItems())) {
         if (auto feed = qobject_cast<RSS::Feed *>(m_feedListWidget->getRSSItem(item)))
             URLs << feed->url();
     }
@@ -426,7 +426,7 @@ void RSSWidget::handleCurrentFeedItemChanged(QTreeWidgetItem *currentItem)
 
 void RSSWidget::on_markReadButton_clicked()
 {
-    for (QTreeWidgetItem *item : copyAsConst(m_feedListWidget->selectedItems())) {
+    for (QTreeWidgetItem *item : asConst(m_feedListWidget->selectedItems())) {
         m_feedListWidget->getRSSItem(item)->markAsRead();
         if (item == m_feedListWidget->stickyUnreadItem())
             break; // all items was read
diff --git a/src/gui/search/pluginselectdialog.cpp b/src/gui/search/pluginselectdialog.cpp
index 995a37c52..a297927b4 100644
--- a/src/gui/search/pluginselectdialog.cpp
+++ b/src/gui/search/pluginselectdialog.cpp
@@ -111,7 +111,7 @@ void PluginSelectDialog::dropEvent(QDropEvent *event)
 
     QStringList files;
     if (event->mimeData()->hasUrls()) {
-        for (const QUrl &url : copyAsConst(event->mimeData()->urls())) {
+        for (const QUrl &url : asConst(event->mimeData()->urls())) {
             if (!url.isEmpty()) {
                 if (url.scheme().compare("file", Qt::CaseInsensitive) == 0)
                     files << url.toLocalFile();
@@ -126,7 +126,7 @@ void PluginSelectDialog::dropEvent(QDropEvent *event)
 
     if (files.isEmpty()) return;
 
-    for (const QString &file : qAsConst(files)) {
+    for (const QString &file : asConst(files)) {
         qDebug("dropped %s", qUtf8Printable(file));
         startAsyncOp();
         m_pluginManager->installPlugin(file);
@@ -136,7 +136,7 @@ void PluginSelectDialog::dropEvent(QDropEvent *event)
 // Decode if we accept drag 'n drop or not
 void PluginSelectDialog::dragEnterEvent(QDragEnterEvent *event)
 {
-    for (const QString &mime : copyAsConst(event->mimeData()->formats())) {
+    for (const QString &mime : asConst(event->mimeData()->formats())) {
         qDebug("mimeData: %s", qUtf8Printable(mime));
     }
 
@@ -188,7 +188,7 @@ void PluginSelectDialog::on_closeButton_clicked()
 void PluginSelectDialog::on_actionUninstall_triggered()
 {
     bool error = false;
-    for (QTreeWidgetItem *item : copyAsConst(m_ui->pluginsTree->selectedItems())) {
+    for (QTreeWidgetItem *item : asConst(m_ui->pluginsTree->selectedItems())) {
         int index = m_ui->pluginsTree->indexOfTopLevelItem(item);
         Q_ASSERT(index != -1);
         QString id = item->text(PLUGIN_ID);
@@ -212,7 +212,7 @@ void PluginSelectDialog::on_actionUninstall_triggered()
 
 void PluginSelectDialog::enableSelection(bool enable)
 {
-    for (QTreeWidgetItem *item : copyAsConst(m_ui->pluginsTree->selectedItems())) {
+    for (QTreeWidgetItem *item : asConst(m_ui->pluginsTree->selectedItems())) {
         int index = m_ui->pluginsTree->indexOfTopLevelItem(item);
         Q_ASSERT(index != -1);
         QString id = item->text(PLUGIN_ID);
@@ -265,7 +265,7 @@ void PluginSelectDialog::loadSupportedSearchPlugins()
 {
     // Some clean up first
     m_ui->pluginsTree->clear();
-    for (const QString &name : copyAsConst(m_pluginManager->allPlugins()))
+    for (const QString &name : asConst(m_pluginManager->allPlugins()))
         addNewPlugin(name);
 }
 
@@ -380,7 +380,7 @@ void PluginSelectDialog::iconDownloaded(const QString &url, QString filePath)
     QList<QSize> sizes = icon.availableSizes();
     bool invalid = (sizes.isEmpty() || icon.pixmap(sizes.first()).isNull());
     if (!invalid) {
-        for (QTreeWidgetItem *item : copyAsConst(findItemsWithUrl(url))) {
+        for (QTreeWidgetItem *item : asConst(findItemsWithUrl(url))) {
             QString id = item->text(PLUGIN_ID);
             PluginInfo *plugin = m_pluginManager->pluginInfo(id);
             if (!plugin) continue;
diff --git a/src/gui/search/searchsortmodel.cpp b/src/gui/search/searchsortmodel.cpp
index 3357ed4a6..fcc9e0000 100644
--- a/src/gui/search/searchsortmodel.cpp
+++ b/src/gui/search/searchsortmodel.cpp
@@ -128,7 +128,7 @@ bool SearchSortModel::filterAcceptsRow(int sourceRow, const QModelIndex &sourceP
     const QAbstractItemModel *const sourceModel = this->sourceModel();
     if (m_isNameFilterEnabled && !m_searchTerm.isEmpty()) {
         QString name = sourceModel->data(sourceModel->index(sourceRow, NAME, sourceParent)).toString();
-        for (const QString &word : qAsConst(m_searchTermWords)) {
+        for (const QString &word : asConst(m_searchTermWords)) {
             int i = name.indexOf(word, 0, Qt::CaseInsensitive);
             if (i == -1) {
                 return false;
diff --git a/src/gui/search/searchwidget.cpp b/src/gui/search/searchwidget.cpp
index cb253c7c5..4b552b748 100644
--- a/src/gui/search/searchwidget.cpp
+++ b/src/gui/search/searchwidget.cpp
@@ -167,11 +167,11 @@ void SearchWidget::fillCatCombobox()
 
     using QStrPair = QPair<QString, QString>;
     QList<QStrPair> tmpList;
-    for (const QString &cat : copyAsConst(SearchPluginManager::instance()->getPluginCategories(selectedPlugin())))
+    for (const QString &cat : asConst(SearchPluginManager::instance()->getPluginCategories(selectedPlugin())))
         tmpList << qMakePair(SearchPluginManager::categoryFullName(cat), cat);
     std::sort(tmpList.begin(), tmpList.end(), [](const QStrPair &l, const QStrPair &r) { return (QString::localeAwareCompare(l.first, r.first) < 0); });
 
-    for (const QStrPair &p : qAsConst(tmpList)) {
+    for (const QStrPair &p : asConst(tmpList)) {
         qDebug("Supported category: %s", qUtf8Printable(p.second));
         m_ui->comboCategory->addItem(p.first, QVariant(p.second));
     }
@@ -189,11 +189,11 @@ void SearchWidget::fillPluginComboBox()
 
     using QStrPair = QPair<QString, QString>;
     QList<QStrPair> tmpList;
-    for (const QString &name : copyAsConst(SearchPluginManager::instance()->enabledPlugins()))
+    for (const QString &name : asConst(SearchPluginManager::instance()->enabledPlugins()))
         tmpList << qMakePair(SearchPluginManager::instance()->pluginFullName(name), name);
     std::sort(tmpList.begin(), tmpList.end(), [](const QStrPair &l, const QStrPair &r) { return (l.first < r.first); } );
 
-    for (const QStrPair &p : qAsConst(tmpList))
+    for (const QStrPair &p : asConst(tmpList))
         m_ui->selectPlugin->addItem(p.first, QVariant(p.second));
 
     if (m_ui->selectPlugin->count() > 3)
diff --git a/src/gui/statsdialog.cpp b/src/gui/statsdialog.cpp
index 2c465ee0e..620e6f0b9 100644
--- a/src/gui/statsdialog.cpp
+++ b/src/gui/statsdialog.cpp
@@ -90,7 +90,7 @@ void StatsDialog::update()
 
     // num_peers is not reliable (adds up peers, which didn't even overcome tcp handshake)
     quint32 peers = 0;
-    for (BitTorrent::TorrentHandle *const torrent : copyAsConst(BitTorrent::Session::instance()->torrents()))
+    for (BitTorrent::TorrentHandle *const torrent : asConst(BitTorrent::Session::instance()->torrents()))
         peers += torrent->peersCount();
 
     m_ui->labelWriteStarve->setText(QString("%1%")
diff --git a/src/gui/tagfiltermodel.cpp b/src/gui/tagfiltermodel.cpp
index 27eab14d4..02ab1c92f 100644
--- a/src/gui/tagfiltermodel.cpp
+++ b/src/gui/tagfiltermodel.cpp
@@ -248,7 +248,7 @@ void TagFilterModel::torrentAboutToBeRemoved(BitTorrent::TorrentHandle *const to
     if (torrent->tags().isEmpty())
         untaggedItem()->decreaseTorrentsCount();
 
-    for (TagModelItem *item : copyAsConst(findItems(torrent->tags())))
+    for (TagModelItem *item : asConst(findItems(torrent->tags())))
         item->decreaseTorrentsCount();
 }
 
@@ -275,7 +275,7 @@ void TagFilterModel::populate()
                                              [](Torrent *torrent) { return torrent->tags().isEmpty(); });
     addToModel(getSpecialUntaggedTag(), untaggedCount);
 
-    for (const QString &tag : copyAsConst(session->tags())) {
+    for (const QString &tag : asConst(session->tags())) {
         const int count = std::count_if(torrents.begin(), torrents.end(),
                                         [tag](Torrent *torrent) { return torrent->hasTag(tag); });
         addToModel(tag, count);
diff --git a/src/gui/tagfilterwidget.cpp b/src/gui/tagfilterwidget.cpp
index 304116c92..7665e26cd 100644
--- a/src/gui/tagfilterwidget.cpp
+++ b/src/gui/tagfilterwidget.cpp
@@ -223,7 +223,7 @@ void TagFilterWidget::removeTag()
 void TagFilterWidget::removeUnusedTags()
 {
     auto session = BitTorrent::Session::instance();
-    for (const QString &tag : copyAsConst(session->tags()))
+    for (const QString &tag : asConst(session->tags()))
         if (model()->data(static_cast<TagFilterProxyModel *>(model())->index(tag), Qt::UserRole) == 0)
             session->removeTag(tag);
     updateGeometry();
diff --git a/src/gui/torrentcontentmodel.cpp b/src/gui/torrentcontentmodel.cpp
index 1c38e38f3..c826364dc 100644
--- a/src/gui/torrentcontentmodel.cpp
+++ b/src/gui/torrentcontentmodel.cpp
@@ -267,14 +267,14 @@ QVector<int> TorrentContentModel::getFilePriorities() const
 {
     QVector<int> prio;
     prio.reserve(m_filesIndex.size());
-    for (const TorrentContentModelFile *file : qAsConst(m_filesIndex))
+    for (const TorrentContentModelFile *file : asConst(m_filesIndex))
         prio.push_back(file->priority());
     return prio;
 }
 
 bool TorrentContentModel::allFiltered() const
 {
-    for (const TorrentContentModelFile *fileItem : qAsConst(m_filesIndex))
+    for (const TorrentContentModelFile *fileItem : asConst(m_filesIndex))
         if (fileItem->priority() != prio::IGNORED)
             return false;
     return true;
@@ -477,7 +477,7 @@ void TorrentContentModel::setupModelData(const BitTorrent::TorrentInfo &info)
         // Iterate of parts of the path to create necessary folders
         QStringList pathFolders = path.split('/', QString::SkipEmptyParts);
         pathFolders.removeLast();
-        for (const QString &pathPart : qAsConst(pathFolders)) {
+        for (const QString &pathPart : asConst(pathFolders)) {
             if (pathPart == ".unwanted")
                 continue;
             TorrentContentModelFolder* newParent = currentParent->childFolderWithName(pathPart);
diff --git a/src/gui/torrentcontentmodelfolder.cpp b/src/gui/torrentcontentmodelfolder.cpp
index dc0874529..963a2fa93 100644
--- a/src/gui/torrentcontentmodelfolder.cpp
+++ b/src/gui/torrentcontentmodelfolder.cpp
@@ -86,7 +86,7 @@ TorrentContentModelItem *TorrentContentModelFolder::child(int row) const
 
 TorrentContentModelFolder *TorrentContentModelFolder::childFolderWithName(const QString &name) const
 {
-    for (TorrentContentModelItem *child : qAsConst(m_childItems))
+    for (TorrentContentModelItem *child : asConst(m_childItems))
         if ((child->itemType() == FolderType) && (child->name() == name))
             return static_cast<TorrentContentModelFolder *>(child);
     return nullptr;
@@ -133,7 +133,7 @@ void TorrentContentModelFolder::setPriority(int newPriority, bool updateParent)
 
     // Update children
     if (m_priority != prio::MIXED)
-        for (TorrentContentModelItem *child : qAsConst(m_childItems))
+        for (TorrentContentModelItem *child : asConst(m_childItems))
             child->setPriority(m_priority, false);
 }
 
@@ -142,7 +142,7 @@ void TorrentContentModelFolder::recalculateProgress()
     qreal tProgress = 0;
     qulonglong tSize = 0;
     qulonglong tRemaining = 0;
-    for (TorrentContentModelItem *child : qAsConst(m_childItems)) {
+    for (TorrentContentModelItem *child : asConst(m_childItems)) {
         if (child->priority() == prio::IGNORED)
             continue;
 
@@ -165,7 +165,7 @@ void TorrentContentModelFolder::recalculateAvailability()
     qreal tAvailability = 0;
     qulonglong tSize = 0;
     bool foundAnyData = false;
-    for (TorrentContentModelItem *child : qAsConst(m_childItems)) {
+    for (TorrentContentModelItem *child : asConst(m_childItems)) {
         if (child->priority() == prio::IGNORED)
             continue;
 
diff --git a/src/gui/transferlistfilterswidget.cpp b/src/gui/transferlistfilterswidget.cpp
index aedf94ddf..cf08b6525 100644
--- a/src/gui/transferlistfilterswidget.cpp
+++ b/src/gui/transferlistfilterswidget.cpp
@@ -220,7 +220,7 @@ TrackerFiltersList::TrackerFiltersList(QWidget *parent, TransferListWidget *tran
 
 TrackerFiltersList::~TrackerFiltersList()
 {
-    for (const QString &iconPath : qAsConst(m_iconPaths))
+    for (const QString &iconPath : asConst(m_iconPaths))
         Utils::Fs::forceRemove(iconPath);
 }
 
diff --git a/src/gui/transferlistmodel.cpp b/src/gui/transferlistmodel.cpp
index ae2ac5d0e..2ff7760b2 100644
--- a/src/gui/transferlistmodel.cpp
+++ b/src/gui/transferlistmodel.cpp
@@ -62,7 +62,7 @@ TransferListModel::TransferListModel(QObject *parent)
 {
     // Load the torrents
     using namespace BitTorrent;
-    for (TorrentHandle *const torrent : copyAsConst(Session::instance()->torrents()))
+    for (TorrentHandle *const torrent : asConst(Session::instance()->torrents()))
         addTorrent(torrent);
 
     // Listen for torrent changes
diff --git a/src/gui/transferlistwidget.cpp b/src/gui/transferlistwidget.cpp
index 1251ea319..79606171f 100644
--- a/src/gui/transferlistwidget.cpp
+++ b/src/gui/transferlistwidget.cpp
@@ -382,7 +382,7 @@ void TransferListWidget::torrentDoubleClicked()
 QList<BitTorrent::TorrentHandle *> TransferListWidget::getSelectedTorrents() const
 {
     QList<BitTorrent::TorrentHandle *> torrents;
-    for (const QModelIndex &index : copyAsConst(selectionModel()->selectedRows()))
+    for (const QModelIndex &index : asConst(selectionModel()->selectedRows()))
         torrents << m_listModel->torrentHandle(mapToSource(index));
 
     return torrents;
@@ -413,25 +413,25 @@ void TransferListWidget::setSelectedTorrentsLocation()
 
 void TransferListWidget::pauseAllTorrents()
 {
-    for (BitTorrent::TorrentHandle *const torrent : copyAsConst(BitTorrent::Session::instance()->torrents()))
+    for (BitTorrent::TorrentHandle *const torrent : asConst(BitTorrent::Session::instance()->torrents()))
         torrent->pause();
 }
 
 void TransferListWidget::resumeAllTorrents()
 {
-    for (BitTorrent::TorrentHandle *const torrent : copyAsConst(BitTorrent::Session::instance()->torrents()))
+    for (BitTorrent::TorrentHandle *const torrent : asConst(BitTorrent::Session::instance()->torrents()))
         torrent->resume();
 }
 
 void TransferListWidget::startSelectedTorrents()
 {
-    for (BitTorrent::TorrentHandle *const torrent : copyAsConst(getSelectedTorrents()))
+    for (BitTorrent::TorrentHandle *const torrent : asConst(getSelectedTorrents()))
         torrent->resume();
 }
 
 void TransferListWidget::forceStartSelectedTorrents()
 {
-    for (BitTorrent::TorrentHandle *const torrent : copyAsConst(getSelectedTorrents()))
+    for (BitTorrent::TorrentHandle *const torrent : asConst(getSelectedTorrents()))
         torrent->resume(true);
 }
 
@@ -446,7 +446,7 @@ void TransferListWidget::startVisibleTorrents()
 
 void TransferListWidget::pauseSelectedTorrents()
 {
-    for (BitTorrent::TorrentHandle *const torrent : copyAsConst(getSelectedTorrents()))
+    for (BitTorrent::TorrentHandle *const torrent : asConst(getSelectedTorrents()))
         torrent->pause();
 }
 
@@ -496,7 +496,7 @@ void TransferListWidget::deleteVisibleTorrents()
         && !DeletionConfirmationDialog::askForDeletionConfirmation(this, deleteLocalFiles, torrents.size(), torrents[0]->name()))
         return;
 
-    for (BitTorrent::TorrentHandle *const torrent : qAsConst(torrents))
+    for (BitTorrent::TorrentHandle *const torrent : asConst(torrents))
         BitTorrent::Session::instance()->deleteTorrent(torrent->hash(), deleteLocalFiles);
 }
 
@@ -529,7 +529,7 @@ void TransferListWidget::bottomPrioSelectedTorrents()
 void TransferListWidget::copySelectedMagnetURIs() const
 {
     QStringList magnetUris;
-    for (BitTorrent::TorrentHandle *const torrent : copyAsConst(getSelectedTorrents()))
+    for (BitTorrent::TorrentHandle *const torrent : asConst(getSelectedTorrents()))
         magnetUris << torrent->toMagnetUri();
 
     qApp->clipboard()->setText(magnetUris.join('\n'));
@@ -538,7 +538,7 @@ void TransferListWidget::copySelectedMagnetURIs() const
 void TransferListWidget::copySelectedNames() const
 {
     QStringList torrentNames;
-    for (BitTorrent::TorrentHandle *const torrent : copyAsConst(getSelectedTorrents()))
+    for (BitTorrent::TorrentHandle *const torrent : asConst(getSelectedTorrents()))
         torrentNames << torrent->name();
 
     qApp->clipboard()->setText(torrentNames.join('\n'));
@@ -547,7 +547,7 @@ void TransferListWidget::copySelectedNames() const
 void TransferListWidget::copySelectedHashes() const
 {
     QStringList torrentHashes;
-    for (BitTorrent::TorrentHandle *const torrent : copyAsConst(getSelectedTorrents()))
+    for (BitTorrent::TorrentHandle *const torrent : asConst(getSelectedTorrents()))
         torrentHashes << torrent->hash();
 
     qApp->clipboard()->setText(torrentHashes.join('\n'));
@@ -567,13 +567,13 @@ void TransferListWidget::openSelectedTorrentsFolder() const
 #ifdef Q_OS_MAC
     // On macOS you expect both the files and folders to be opened in their parent
     // folders prehilighted for opening, so we use a custom method.
-    for (BitTorrent::TorrentHandle *const torrent : copyAsConst(getSelectedTorrents())) {
+    for (BitTorrent::TorrentHandle *const torrent : asConst(getSelectedTorrents())) {
         QString path = torrent->contentPath(true);
         pathsList.insert(path);
     }
     MacUtils::openFiles(pathsList);
 #else
-    for (BitTorrent::TorrentHandle *const torrent : copyAsConst(getSelectedTorrents())) {
+    for (BitTorrent::TorrentHandle *const torrent : asConst(getSelectedTorrents())) {
         QString path = torrent->contentPath(true);
         if (!pathsList.contains(path)) {
             if (torrent->filesCount() == 1)
@@ -588,7 +588,7 @@ void TransferListWidget::openSelectedTorrentsFolder() const
 
 void TransferListWidget::previewSelectedTorrents()
 {
-    for (BitTorrent::TorrentHandle *const torrent : copyAsConst(getSelectedTorrents())) {
+    for (BitTorrent::TorrentHandle *const torrent : asConst(getSelectedTorrents())) {
         if (torrent->hasMetadata())
             new PreviewSelectDialog(this, torrent);
     }
@@ -597,7 +597,7 @@ void TransferListWidget::previewSelectedTorrents()
 void TransferListWidget::setDlLimitSelectedTorrents()
 {
     QList<BitTorrent::TorrentHandle *> torrentsList;
-    for (BitTorrent::TorrentHandle *const torrent : copyAsConst(getSelectedTorrents())) {
+    for (BitTorrent::TorrentHandle *const torrent : asConst(getSelectedTorrents())) {
         if (torrent->isSeed())
             continue;
         torrentsList += torrent;
@@ -605,7 +605,7 @@ void TransferListWidget::setDlLimitSelectedTorrents()
     if (torrentsList.empty()) return;
 
     int oldLimit = torrentsList.first()->downloadLimit();
-    for (BitTorrent::TorrentHandle *const torrent : qAsConst(torrentsList)) {
+    for (BitTorrent::TorrentHandle *const torrent : asConst(torrentsList)) {
         if (torrent->downloadLimit() != oldLimit) {
             oldLimit = -1;
             break;
@@ -618,7 +618,7 @@ void TransferListWidget::setDlLimitSelectedTorrents()
                 , BitTorrent::Session::instance()->globalDownloadSpeedLimit());
     if (!ok) return;
 
-    for (BitTorrent::TorrentHandle *const torrent : qAsConst(torrentsList)) {
+    for (BitTorrent::TorrentHandle *const torrent : asConst(torrentsList)) {
         qDebug("Applying download speed limit of %ld Kb/s to torrent %s", (newLimit / 1024l), qUtf8Printable(torrent->hash()));
         torrent->setDownloadLimit(newLimit);
     }
@@ -630,7 +630,7 @@ void TransferListWidget::setUpLimitSelectedTorrents()
     if (torrentsList.empty()) return;
 
     int oldLimit = torrentsList.first()->uploadLimit();
-    for (BitTorrent::TorrentHandle *const torrent : qAsConst(torrentsList)) {
+    for (BitTorrent::TorrentHandle *const torrent : asConst(torrentsList)) {
         if (torrent->uploadLimit() != oldLimit) {
             oldLimit = -1;
             break;
@@ -643,7 +643,7 @@ void TransferListWidget::setUpLimitSelectedTorrents()
                 , BitTorrent::Session::instance()->globalUploadSpeedLimit());
     if (!ok) return;
 
-    for (BitTorrent::TorrentHandle *const torrent : qAsConst(torrentsList)) {
+    for (BitTorrent::TorrentHandle *const torrent : asConst(torrentsList)) {
         qDebug("Applying upload speed limit of %ld Kb/s to torrent %s", (newLimit / 1024l), qUtf8Printable(torrent->hash()));
         torrent->setUploadLimit(newLimit);
     }
@@ -687,13 +687,13 @@ void TransferListWidget::recheckSelectedTorrents()
         if (ret != QMessageBox::Yes) return;
     }
 
-    for (BitTorrent::TorrentHandle *const torrent : copyAsConst(getSelectedTorrents()))
+    for (BitTorrent::TorrentHandle *const torrent : asConst(getSelectedTorrents()))
         torrent->forceRecheck();
 }
 
 void TransferListWidget::reannounceSelectedTorrents()
 {
-    for (BitTorrent::TorrentHandle *const torrent : copyAsConst(getSelectedTorrents()))
+    for (BitTorrent::TorrentHandle *const torrent : asConst(getSelectedTorrents()))
         torrent->forceReannounce();
 }
 
@@ -739,7 +739,7 @@ void TransferListWidget::displayDLHoSMenu(const QPoint&)
 
 void TransferListWidget::toggleSelectedTorrentsSuperSeeding() const
 {
-    for (BitTorrent::TorrentHandle *const torrent : copyAsConst(getSelectedTorrents())) {
+    for (BitTorrent::TorrentHandle *const torrent : asConst(getSelectedTorrents())) {
         if (torrent->hasMetadata())
             torrent->setSuperSeeding(!torrent->superSeeding());
     }
@@ -747,19 +747,19 @@ void TransferListWidget::toggleSelectedTorrentsSuperSeeding() const
 
 void TransferListWidget::toggleSelectedTorrentsSequentialDownload() const
 {
-    for (BitTorrent::TorrentHandle *const torrent : copyAsConst(getSelectedTorrents()))
+    for (BitTorrent::TorrentHandle *const torrent : asConst(getSelectedTorrents()))
         torrent->toggleSequentialDownload();
 }
 
 void TransferListWidget::toggleSelectedFirstLastPiecePrio() const
 {
-    for (BitTorrent::TorrentHandle *const torrent : copyAsConst(getSelectedTorrents()))
+    for (BitTorrent::TorrentHandle *const torrent : asConst(getSelectedTorrents()))
         torrent->toggleFirstLastPiecePriority();
 }
 
 void TransferListWidget::setSelectedAutoTMMEnabled(bool enabled) const
 {
-    for (BitTorrent::TorrentHandle *const torrent : copyAsConst(getSelectedTorrents()))
+    for (BitTorrent::TorrentHandle *const torrent : asConst(getSelectedTorrents()))
         torrent->setAutoTMMEnabled(enabled);
 }
 
@@ -812,7 +812,7 @@ QStringList TransferListWidget::askTagsForSelection(const QString &dialogTitle)
 
 void TransferListWidget::applyToSelectedTorrents(const std::function<void (BitTorrent::TorrentHandle *const)> &fn)
 {
-    for (const QModelIndex &index : copyAsConst(selectionModel()->selectedRows())) {
+    for (const QModelIndex &index : asConst(selectionModel()->selectedRows())) {
         BitTorrent::TorrentHandle *const torrent = m_listModel->torrentHandle(mapToSource(index));
         Q_ASSERT(torrent);
         fn(torrent);
@@ -840,7 +840,7 @@ void TransferListWidget::renameSelectedTorrent()
 
 void TransferListWidget::setSelectionCategory(QString category)
 {
-    for (const QModelIndex &index : copyAsConst(selectionModel()->selectedRows()))
+    for (const QModelIndex &index : asConst(selectionModel()->selectedRows()))
         m_listModel->setData(m_listModel->index(mapToSource(index).row(), TransferListModel::TR_CATEGORY), category, Qt::DisplayRole);
 }
 
@@ -1023,7 +1023,7 @@ void TransferListWidget::displayListMenu(const QPoint&)
     categoryActions << categoryMenu->addAction(GuiIconProvider::instance()->getIcon("list-add"), tr("New...", "New category..."));
     categoryActions << categoryMenu->addAction(GuiIconProvider::instance()->getIcon("edit-clear"), tr("Reset", "Reset category"));
     categoryMenu->addSeparator();
-    for (QString category : qAsConst(categories)) {
+    for (QString category : asConst(categories)) {
         category.replace('&', "&&");  // avoid '&' becomes accelerator key
         QAction *cat = new QAction(GuiIconProvider::instance()->getIcon("inode-directory"), category, categoryMenu);
         if (allSameCategory && (category == firstCategory)) {
@@ -1042,7 +1042,7 @@ void TransferListWidget::displayListMenu(const QPoint&)
     tagsActions << tagsMenu->addAction(GuiIconProvider::instance()->getIcon("list-add"), tr("Add...", "Add / assign multiple tags..."));
     tagsActions << tagsMenu->addAction(GuiIconProvider::instance()->getIcon("edit-clear"), tr("Remove All", "Remove all tags"));
     tagsMenu->addSeparator();
-    for (const QString &tag : qAsConst(tags)) {
+    for (const QString &tag : asConst(tags)) {
         const Qt::CheckState initialState = tagsInAll.contains(tag) ? Qt::Checked
                                             : tagsInAny.contains(tag) ? Qt::PartiallyChecked
                                             : Qt::Unchecked;
diff --git a/src/webui/api/appcontroller.cpp b/src/webui/api/appcontroller.cpp
index 82eb7d2e1..8aabc491e 100644
--- a/src/webui/api/appcontroller.cpp
+++ b/src/webui/api/appcontroller.cpp
@@ -202,7 +202,7 @@ void AppController::preferencesAction()
     data["bypass_local_auth"] = !pref->isWebUiLocalAuthEnabled();
     data["bypass_auth_subnet_whitelist_enabled"] = pref->isWebUiAuthSubnetWhitelistEnabled();
     QStringList authSubnetWhitelistStringList;
-    for (const Utils::Net::Subnet &subnet : copyAsConst(pref->getWebUiAuthSubnetWhitelist()))
+    for (const Utils::Net::Subnet &subnet : asConst(pref->getWebUiAuthSubnetWhitelist()))
         authSubnetWhitelistStringList << Utils::Net::subnetToString(subnet);
     data["bypass_auth_subnet_whitelist"] = authSubnetWhitelistStringList.join("\n");
     // Security
diff --git a/src/webui/api/logcontroller.cpp b/src/webui/api/logcontroller.cpp
index 9d15a82a6..9310821e5 100644
--- a/src/webui/api/logcontroller.cpp
+++ b/src/webui/api/logcontroller.cpp
@@ -72,7 +72,7 @@ void LogController::mainAction()
     Logger *const logger = Logger::instance();
     QVariantList msgList;
 
-    for (const Log::Msg &msg : copyAsConst(logger->getMessages(lastKnownId))) {
+    for (const Log::Msg &msg : asConst(logger->getMessages(lastKnownId))) {
         if (!((msg.type == Log::NORMAL && isNormal)
               || (msg.type == Log::INFO && isInfo)
               || (msg.type == Log::WARNING && isWarning)
@@ -111,7 +111,7 @@ void LogController::peersAction()
     Logger *const logger = Logger::instance();
     QVariantList peerList;
 
-    for (const Log::Peer &peer : copyAsConst(logger->getPeers(lastKnownId))) {
+    for (const Log::Peer &peer : asConst(logger->getPeers(lastKnownId))) {
         QVariantMap map;
         map[KEY_LOG_ID] = peer.id;
         map[KEY_LOG_TIMESTAMP] = peer.timestamp;
diff --git a/src/webui/api/searchcontroller.cpp b/src/webui/api/searchcontroller.cpp
index 716a6bd8a..144167726 100644
--- a/src/webui/api/searchcontroller.cpp
+++ b/src/webui/api/searchcontroller.cpp
@@ -202,7 +202,7 @@ void SearchController::categoriesAction()
     const QString name = params()["pluginName"].trimmed();
 
     categories << SearchPluginManager::categoryFullName("all");
-    for (const QString &category : copyAsConst(SearchPluginManager::instance()->getPluginCategories(name)))
+    for (const QString &category : asConst(SearchPluginManager::instance()->getPluginCategories(name)))
         categories << SearchPluginManager::categoryFullName(category);
 
     const QJsonArray result = QJsonArray::fromStringList(categories);
@@ -263,7 +263,7 @@ void SearchController::checkForUpdatesFinished(const QHash<QString, PluginVersio
     LogMsg(tr("Updating %1 plugins").arg(updateInfo.size()), Log::INFO);
 
     SearchPluginManager *const pluginManager = SearchPluginManager::instance();
-    for (const QString &pluginName : copyAsConst(updateInfo.keys())) {
+    for (const QString &pluginName : asConst(updateInfo.keys())) {
         LogMsg(tr("Updating plugin %1").arg(pluginName), Log::INFO);
         pluginManager->updatePlugin(pluginName);
     }
diff --git a/src/webui/api/synccontroller.cpp b/src/webui/api/synccontroller.cpp
index 17b12276b..0bc77fd14 100644
--- a/src/webui/api/synccontroller.cpp
+++ b/src/webui/api/synccontroller.cpp
@@ -134,7 +134,7 @@ namespace
 
         // num_peers is not reliable (adds up peers, which didn't even overcome tcp handshake)
         quint32 peers = 0;
-        for (BitTorrent::TorrentHandle *const torrent : copyAsConst(BitTorrent::Session::instance()->torrents()))
+        for (BitTorrent::TorrentHandle *const torrent : asConst(BitTorrent::Session::instance()->torrents()))
             peers += torrent->peersCount();
         map[KEY_TRANSFER_WRITE_CACHE_OVERLOAD] = ((sessionStatus.diskWriteQueue > 0) && (peers > 0)) ? Utils::String::fromDouble((100. * sessionStatus.diskWriteQueue) / peers, 2) : "0";
         map[KEY_TRANSFER_READ_CACHE_OVERLOAD] = ((sessionStatus.diskReadQueue > 0) && (peers > 0)) ? Utils::String::fromDouble((100. * sessionStatus.diskReadQueue) / peers, 2) : "0";
@@ -410,7 +410,7 @@ void SyncController::maindataAction()
 
     BitTorrent::Session *const session = BitTorrent::Session::instance();
 
-    for (BitTorrent::TorrentHandle *const torrent : copyAsConst(session->torrents())) {
+    for (BitTorrent::TorrentHandle *const torrent : asConst(session->torrents())) {
         QVariantMap map = serialize(*torrent);
         map.remove(KEY_TORRENT_HASH);
 
diff --git a/src/webui/api/torrentscontroller.cpp b/src/webui/api/torrentscontroller.cpp
index 0f4383443..1082f829d 100644
--- a/src/webui/api/torrentscontroller.cpp
+++ b/src/webui/api/torrentscontroller.cpp
@@ -113,7 +113,7 @@ namespace
     void applyToTorrents(const QStringList &hashes, const std::function<void (BitTorrent::TorrentHandle *torrent)> &func)
     {
         if ((hashes.size() == 1) && (hashes[0] == QLatin1String("all"))) {
-            for (BitTorrent::TorrentHandle *torrent : copyAsConst(BitTorrent::Session::instance()->torrents()))
+            for (BitTorrent::TorrentHandle *torrent : asConst(BitTorrent::Session::instance()->torrents()))
                 func(torrent);
         }
         else {
@@ -167,7 +167,7 @@ void TorrentsController::infoAction()
 
     QVariantList torrentList;
     TorrentFilter torrentFilter(filter, (hashSet.isEmpty() ? TorrentFilter::AnyHash : hashSet), category);
-    for (BitTorrent::TorrentHandle *const torrent : copyAsConst(BitTorrent::Session::instance()->torrents())) {
+    for (BitTorrent::TorrentHandle *const torrent : asConst(BitTorrent::Session::instance()->torrents())) {
         if (torrentFilter.match(torrent))
             torrentList.append(serialize(*torrent));
     }
@@ -307,7 +307,7 @@ void TorrentsController::trackersAction()
         throw APIError(APIErrorType::NotFound);
 
     QHash<QString, BitTorrent::TrackerInfo> trackersData = torrent->trackerInfos();
-    for (const BitTorrent::TrackerEntry &tracker : copyAsConst(torrent->trackers())) {
+    for (const BitTorrent::TrackerEntry &tracker : asConst(torrent->trackers())) {
         QVariantMap trackerDict;
         trackerDict[KEY_TRACKER_URL] = tracker.url();
         const BitTorrent::TrackerInfo data = trackersData.value(tracker.url());
@@ -346,7 +346,7 @@ void TorrentsController::webseedsAction()
     if (!torrent)
         throw APIError(APIErrorType::NotFound);
 
-    for (const QUrl &webseed : copyAsConst(torrent->urlSeeds())) {
+    for (const QUrl &webseed : asConst(torrent->urlSeeds())) {
         QVariantMap webSeedDict;
         webSeedDict[KEY_WEBSEED_URL] = webseed.toString();
         webSeedList.append(webSeedDict);
@@ -498,7 +498,7 @@ void TorrentsController::addAction()
     params.downloadLimit = (dlLimit > 0) ? dlLimit : -1;
 
     bool partialSuccess = false;
-    for (QString url : copyAsConst(urls.split('\n'))) {
+    for (QString url : asConst(urls.split('\n'))) {
         url = url.trimmed();
         if (!url.isEmpty()) {
             Net::DownloadManager::instance()->setCookiesFromUrl(cookies, QUrl::fromEncoded(url.toUtf8()));
@@ -531,7 +531,7 @@ void TorrentsController::addTrackersAction()
     BitTorrent::TorrentHandle *const torrent = BitTorrent::Session::instance()->findTorrent(hash);
     if (torrent) {
         QList<BitTorrent::TrackerEntry> trackers;
-        for (QString url : copyAsConst(params()["urls"].split('\n'))) {
+        for (QString url : asConst(params()["urls"].split('\n'))) {
             url = url.trimmed();
             if (!url.isEmpty())
                 trackers << url;
diff --git a/src/webui/webapplication.cpp b/src/webui/webapplication.cpp
index 64eb1e3b2..b16a466c2 100644
--- a/src/webui/webapplication.cpp
+++ b/src/webui/webapplication.cpp
@@ -525,7 +525,7 @@ Http::Response WebApplication::processRequest(const Http::Request &request, cons
     if (m_request.method == Http::METHOD_GET) {
         // Parse GET parameters
         using namespace Utils::ByteArray;
-        for (const QByteArray &param : copyAsConst(splitToViews(m_request.query, "&"))) {
+        for (const QByteArray &param : asConst(splitToViews(m_request.query, "&"))) {
             const int sepPos = param.indexOf('=');
             if (sepPos <= 0) continue; // ignores params without name