--- a/src/vehicle_gui.h	Tue Mar 27 13:47:20 2007 +0000
+++ b/src/vehicle_gui.h	Tue Mar 27 13:58:24 2007 +0000
@@ -32,7 +32,7 @@
 
 void PlayerVehWndProc(Window *w, WindowEvent *e);
 
-void DrawVehiclePurchaseInfo(int x, int y, uint w, EngineID engine_number);
+int DrawVehiclePurchaseInfo(int x, int y, uint w, EngineID engine_number);
 
 void DrawTrainImage(const Vehicle *v, int x, int y, int count, int skip, VehicleID selection);
 void DrawRoadVehImage(const Vehicle *v, int x, int y, VehicleID selection);