--- a/roadveh_gui.c	Sat Nov 18 16:47:02 2006 +0000
+++ b/roadveh_gui.c	Sat Nov 18 17:04:44 2006 +0000
@@ -534,8 +534,7 @@
 
 	DeleteWindowById(WC_BUILD_VEHICLE, tile);
 
-	w = AllocateWindowDesc(&_new_road_veh_desc);
-	w->window_number = tile;
+	w = AllocateWindowDescFront(&_new_road_veh_desc, tile);
 	w->vscroll.cap = 8;
 	w->widget[2].data = (w->vscroll.cap << 8) + 1;