diff --git a/src/options_imp.cpp b/src/options_imp.cpp
index 4397fe186..7db01765c 100644
--- a/src/options_imp.cpp
+++ b/src/options_imp.cpp
@@ -202,6 +202,8 @@ options_imp::options_imp(QWidget *parent):QDialog(parent){
   connect(actionTorrentDlOnDblClBox, SIGNAL(currentIndexChanged(int)), this, SLOT(enableApplyButton()));
   connect(actionTorrentFnOnDblClBox, SIGNAL(currentIndexChanged(int)), this, SLOT(enableApplyButton()));
   connect(checkTempFolder, SIGNAL(toggled(bool)), this, SLOT(enableApplyButton()));
+  connect(addScanFolderButton, SIGNAL(clicked()), this, SLOT(enableApplyButton()));
+  connect(removeScanFolderButton, SIGNAL(clicked()), this, SLOT(enableApplyButton()));
   // Connection tab
   connect(spinPort, SIGNAL(valueChanged(QString)), this, SLOT(enableApplyButton()));
   connect(checkUPnP, SIGNAL(toggled(bool)), this, SLOT(enableApplyButton()));
diff --git a/src/transferlistwidget.cpp b/src/transferlistwidget.cpp
index 9ab085f8c..508d4ad85 100644
--- a/src/transferlistwidget.cpp
+++ b/src/transferlistwidget.cpp
@@ -156,7 +156,7 @@ TransferListWidget::~TransferListWidget() {
   delete listDelegate;
 }
 
-void TransferListWidget::addTorrent(QTorrentHandle& h) {
+void TransferListWidget::addTorrent(const QTorrentHandle& h) {
   if(!h.is_valid()) return;
   // Check that the torrent is not already there
   if(getRowFromHash(h.hash()) >= 0) return;
diff --git a/src/transferlistwidget.h b/src/transferlistwidget.h
index eadaaaaa1..a4a78a2c1 100644
--- a/src/transferlistwidget.h
+++ b/src/transferlistwidget.h
@@ -95,7 +95,7 @@ protected slots:
 
 public slots:
   void refreshList();
-  void addTorrent(QTorrentHandle& h);
+  void addTorrent(const QTorrentHandle& h);
   void pauseTorrent(QTorrentHandle &h);
   void setFinished(QTorrentHandle &h);
   void setSelectionLabel(QString label);