diff --git a/gtk/gtkrecentaction.h b/gtk/gtkrecentaction.h
index 4e6a35c74e..96d5ca6a19 100644
--- a/gtk/gtkrecentaction.h
+++ b/gtk/gtkrecentaction.h
@@ -47,7 +47,7 @@ struct _GtkRecentAction
   GtkAction parent_instance;
 
   /*< private >*/
-  GtkRecentActionPrivate *priv;
+  GtkRecentActionPrivate *GSEAL (priv);
 };
 
 struct _GtkRecentActionClass