--- a/roadveh_gui.c	Sat Sep 17 13:57:01 2005 +0000
+++ b/roadveh_gui.c	Sun Sep 18 20:56:44 2005 +0000
@@ -597,7 +597,7 @@
 	}
 }
 
-static int GetVehicleFromRoadDepotWndPt(Window *w, int x, int y, Vehicle **veh)
+static int GetVehicleFromRoadDepotWndPt(const Window *w, int x, int y, Vehicle **veh)
 {
 	uint xt,row,xm;
 	TileIndex tile;