diff --git a/gtk/gtkmenubutton.c b/gtk/gtkmenubutton.c
index bbfaf78733..54fca43b33 100644
--- a/gtk/gtkmenubutton.c
+++ b/gtk/gtkmenubutton.c
@@ -916,13 +916,6 @@ gtk_menu_button_popdown (GtkMenuButton *menu_button)
   gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (menu_button->button), FALSE);
 }
 
-void
-gtk_menu_button_add_child (GtkMenuButton *menu_button,
-                           GtkWidget     *new_child)
-{
-  gtk_button_set_child (GTK_BUTTON (menu_button->button), new_child);
-}
-
 /**
  * gtk_menu_button_set_create_popup_func:
  * @menu_button: a #GtkMenuButton
diff --git a/gtk/gtkmenubuttonprivate.h b/gtk/gtkmenubuttonprivate.h
index aaddeea39b..9fb6cee70a 100644
--- a/gtk/gtkmenubuttonprivate.h
+++ b/gtk/gtkmenubuttonprivate.h
@@ -25,9 +25,6 @@
 
 G_BEGIN_DECLS
 
-void   gtk_menu_button_add_child (GtkMenuButton *button,
-                                  GtkWidget     *child);
-
 G_END_DECLS
 
 #endif /* __GTK_MENU_BUTTON_PRIVATE_H__ */