diff --git a/gtk/gtkpaned.h b/gtk/gtkpaned.h
index 5067e42d18..27e8201de2 100644
--- a/gtk/gtkpaned.h
+++ b/gtk/gtkpaned.h
@@ -127,6 +127,8 @@ void        gtk_paned_set_position (GtkPaned       *paned,
 GtkWidget * gtk_paned_get_child1   (GtkPaned       *paned);
 GtkWidget * gtk_paned_get_child2   (GtkPaned       *paned);
 
+GdkWindow * gtk_paned_get_handle_window (GtkPaned  *paned);
+
 
 G_END_DECLS