diff --git a/src/sourcetree/sourcetreeview.cpp b/src/sourcetree/sourcetreeview.cpp
index 407fce427..232abad8b 100644
--- a/src/sourcetree/sourcetreeview.cpp
+++ b/src/sourcetree/sourcetreeview.cpp
@@ -98,7 +98,7 @@ SourceTreeView::SourceTreeView( QWidget* parent )
     header()->setStretchLastSection( false );
     header()->setResizeMode( 0, QHeaderView::Stretch );
 
-    connect( this, SIGNAL( clicked( QModelIndex ) ), SLOT( onItemActivated( QModelIndex ) ) );
+    connect( this, SIGNAL( activated( QModelIndex ) ), SLOT( onItemActivated( QModelIndex ) ) );
     connect( this, SIGNAL( expanded( QModelIndex ) ), this, SLOT( onItemExpanded( QModelIndex ) ) );
 //     connect( selectionModel(), SIGNAL( selectionChanged( QItemSelection, QItemSelection ) ), SLOT( onSelectionChanged() ) );
 
@@ -200,7 +200,7 @@ SourceTreeView::showOfflineSources( bool offlineSourcesShown )
 void
 SourceTreeView::onItemActivated( const QModelIndex& index )
 {
-    if ( !index.isValid() )
+    if ( !index.isValid() || !index.flags().testFlag( Qt::ItemIsEnabled ) )
         return;
 
     SourceTreeItem* item = itemFromIndex< SourceTreeItem >( index );