diff --git a/mirall.desktop.in b/mirall.desktop.in
index d7a8a95c4490c..68d67f8abb4bf 100644
--- a/mirall.desktop.in
+++ b/mirall.desktop.in
@@ -8,6 +8,7 @@ GenericName=Folder Sync
 Icon=@APPLICATION_ICON_NAME@
 Keywords=@APPLICATION_NAME@;syncing;file;sharing;
 X-GNOME-Autostart-Delay=3
+SingleMainWindow=True
 MimeType=application/vnd.@APPLICATION_EXECUTABLE@;x-scheme-handler/@APPLICATION_URI_HANDLER_SCHEME@;
 Actions=Quit;