diff --git a/src/core/window-private.h b/src/core/window-private.h
index 6908b904e..354a4ba6b 100644
--- a/src/core/window-private.h
+++ b/src/core/window-private.h
@@ -639,7 +639,7 @@ void        meta_window_unmanage           (MetaWindow  *window,
                                             guint32      timestamp);
 void        meta_window_unmanage_on_idle   (MetaWindow *window);
 void        meta_window_queue              (MetaWindow  *window,
-                                            guint queuebits);
+                                            MetaQueueType queue_types);
 META_EXPORT_TEST
 void        meta_window_untile             (MetaWindow        *window);