diff --git a/gtk/gtkrecentchoosermenu.h b/gtk/gtkrecentchoosermenu.h
index 2a140c5460..6b401d6918 100644
--- a/gtk/gtkrecentchoosermenu.h
+++ b/gtk/gtkrecentchoosermenu.h
@@ -46,7 +46,7 @@ struct _GtkRecentChooserMenu
   /*< private >*/
   GtkMenu parent_instance;
 
-  GtkRecentChooserMenuPrivate *priv;
+  GtkRecentChooserMenuPrivate *GSEAL (priv);
 };
 
 struct _GtkRecentChooserMenuClass