diff --git a/gobject/gobject.h b/gobject/gobject.h
index a75f03cb2..751e5f2f8 100644
--- a/gobject/gobject.h
+++ b/gobject/gobject.h
@@ -344,8 +344,10 @@ struct  _GObjectClass
   void	     (*constructed)		(GObject	*object);
 
   /*< private >*/
+  gsize		flags;
+
   /* padding */
-  gpointer	pdummy[7];
+  gpointer	pdummy[6];
 };
 /**
  * GObjectConstructParam: