diff --git a/mirall.desktop.in b/mirall.desktop.in
index d7a8a95c4..7f8ee2b7e 100644
--- a/mirall.desktop.in
+++ b/mirall.desktop.in
@@ -9,6 +9,7 @@ Icon=@APPLICATION_ICON_NAME@
 Keywords=@APPLICATION_NAME@;syncing;file;sharing;
 X-GNOME-Autostart-Delay=3
 MimeType=application/vnd.@APPLICATION_EXECUTABLE@;x-scheme-handler/@APPLICATION_URI_HANDLER_SCHEME@;
+SingleMainWindow=true
 Actions=Quit;
 
 # Translations