diff --git a/src/previewselect.cpp b/src/previewselect.cpp
index 5ba887298..888653ae0 100644
--- a/src/previewselect.cpp
+++ b/src/previewselect.cpp
@@ -39,6 +39,7 @@
 #include "misc.h"
 #include "previewlistdelegate.h"
 #include "previewselect.h"
+#include "fs_utils.h"
 
 PreviewSelect::PreviewSelect(QWidget* parent, QTorrentHandle h): QDialog(parent), h(h) {
   setupUi(this);
@@ -58,7 +59,9 @@ PreviewSelect::PreviewSelect(QWidget* parent, QTorrentHandle h): QDialog(parent)
   unsigned int nbFiles = h.num_files();
   for (unsigned int i=0; i<nbFiles; ++i) {
     QString fileName = h.filename_at(i);
-    QString extension = fileName.split(QString::fromUtf8(".")).last().toUpper();
+    if (fileName.endsWith(".!qB"))
+      fileName.chop(4);
+    QString extension = fsutils::fileExtension(fileName).toUpper();
     if (misc::isPreviewable(extension)) {
       int row = previewListModel->rowCount();
       previewListModel->insertRow(row);
diff --git a/src/qtlibtorrent/qbtsession.cpp b/src/qtlibtorrent/qbtsession.cpp
index 6b163748d..3872c0245 100755
--- a/src/qtlibtorrent/qbtsession.cpp
+++ b/src/qtlibtorrent/qbtsession.cpp
@@ -1731,7 +1731,10 @@ bool QBtSession::isFilePreviewPossible(const QString &hash) const {
   }
   const unsigned int nbFiles = h.num_files();
   for (unsigned int i=0; i<nbFiles; ++i) {
-    const QString extension = fsutils::fileExtension(h.filename_at(i));
+    QString filename = h.filename_at(i);
+    if (filename.endsWith(".!qB"))
+      filename.chop(4);
+    const QString extension = fsutils::fileExtension(filename);
     if (misc::isPreviewable(extension))
       return true;
   }