diff --git a/extensions/auto-move-windows/prefs.js b/extensions/auto-move-windows/prefs.js
index cc542b2c..31f4c9ea 100644
--- a/extensions/auto-move-windows/prefs.js
+++ b/extensions/auto-move-windows/prefs.js
@@ -1,14 +1,10 @@
 // -*- mode: js2; indent-tabs-mode: nil; js2-basic-offset: 4 -*-
 // Start apps on custom workspaces
 
-const GdkPixbuf = imports.gi.GdkPixbuf;
 const Gio = imports.gi.Gio;
-const GLib = imports.gi.GLib;
 const GObject = imports.gi.GObject;
-const GMenu = imports.gi.GMenu;
 const Gtk = imports.gi.Gtk;
 const Lang = imports.lang;
-const Mainloop = imports.mainloop;
 
 const Gettext = imports.gettext.domain('gnome-shell-extensions');
 const _ = Gettext.gettext;