diff --git a/src/GUI.cpp b/src/GUI.cpp
index 4e77f3eb2..b251ca4da 100644
--- a/src/GUI.cpp
+++ b/src/GUI.cpp
@@ -328,6 +328,7 @@ void GUI::on_actionLock_qBittorrent_triggered() {
   // Lock the interface
   ui_locked = true;
   Preferences::setUILocked(true);
+  myTrayIconMenu->setEnabled(false);
   hide();
 }
 
@@ -583,6 +584,7 @@ bool GUI::unlockUI() {
   if(real_pass_md5 == password_md5) {
     ui_locked = false;
     Preferences::setUILocked(false);
+    myTrayIconMenu->setEnabled(true);
     return true;
   }
   QMessageBox::warning(this, tr("Invalid password"), tr("The password is invalid"));
@@ -1100,6 +1102,8 @@ QMenu* GUI::getTrayIconMenu() {
   myTrayIconMenu->addAction(actionPause_All);
   myTrayIconMenu->addSeparator();
   myTrayIconMenu->addAction(actionExit);
+  if(ui_locked)
+    myTrayIconMenu->setEnabled(false);
   return myTrayIconMenu;
 }
 
diff --git a/src/src.pro b/src/src.pro
index 80c4ce05b..3e5b8275b 100644
--- a/src/src.pro
+++ b/src/src.pro
@@ -150,8 +150,6 @@ contains(DEFINES, DISABLE_GUI) {
   TARGET = qbittorrent
 }
 
-QMAKE_CXXFLAGS_RELEASE += -flto
-QMAKE_CXXFLAGS_DEBUG += -flto
 unix:QMAKE_LFLAGS_SHAPP += -rdynamic
 
 unix {