diff --git a/src/compositor/meta-window-group.h b/src/compositor/meta-window-group.h
index d624ac68c..685337efd 100644
--- a/src/compositor/meta-window-group.h
+++ b/src/compositor/meta-window-group.h
@@ -31,7 +31,4 @@ GType meta_window_group_get_type (void);
 
 ClutterActor *meta_window_group_new (MetaScreen *screen);
 
-gboolean meta_window_group_actor_is_untransformed (ClutterActor *actor,
-                                                   int          *x_origin,
-                                                   int          *y_origin);
 #endif /* META_WINDOW_GROUP_H */