diff --git a/src/calibre/gui2/dbus_export/menu.py b/src/calibre/gui2/dbus_export/menu.py
index 38c013b7de..054a68eea5 100644
--- a/src/calibre/gui2/dbus_export/menu.py
+++ b/src/calibre/gui2/dbus_export/menu.py
@@ -388,5 +388,6 @@ def test():
     app.exec_()
     del dbus_name
 
+
 if __name__ == '__main__':
     test()