diff --git a/src/calibre/gui2/preferences/__init__.py b/src/calibre/gui2/preferences/__init__.py
index 273e8073ee..644bd202b6 100644
--- a/src/calibre/gui2/preferences/__init__.py
+++ b/src/calibre/gui2/preferences/__init__.py
@@ -336,7 +336,7 @@ def init_gui():
     actions = tuple(Main.create_application_menubar())
     db = db()
     gui = Main(opts)
-    gui.initialize(db.library_path, db, None, actions, show_gui=False)
+    gui.initialize(db.library_path, db, actions, show_gui=False)
     return gui