diff --git a/gtk/gtkcombobox.c b/gtk/gtkcombobox.c
index 02ca5e888e..e3b1486cb2 100644
--- a/gtk/gtkcombobox.c
+++ b/gtk/gtkcombobox.c
@@ -2090,6 +2090,7 @@ gtk_combo_box_real_popup (GtkComboBox *combo_box)
                                     GTK_WINDOW (toplevel));
     }
 
+  gtk_widget_show_all (priv->scrolled_window);
   gtk_combo_box_list_position (combo_box, &x, &y, &width, &height);
   
   gtk_widget_set_size_request (priv->popup_window, width, height);