diff --git a/gtk/gtktoolpalette.c b/gtk/gtktoolpalette.c
index 15ecf3eba8..de6d268151 100644
--- a/gtk/gtktoolpalette.c
+++ b/gtk/gtktoolpalette.c
@@ -683,6 +683,7 @@ gtk_tool_palette_realize (GtkWidget *widget)
 
   window = gdk_window_new (gtk_widget_get_parent_window (widget),
                            &attributes, attributes_mask);
+  gtk_widget_set_window (widget, window);
   gdk_window_set_user_data (window, widget);
 
   gtk_widget_style_attach (widget);