--- a/src/articulated_vehicles.h	Sun Sep 16 21:34:50 2007 +0000
+++ b/src/articulated_vehicles.h	Mon Sep 17 04:23:03 2007 +0000
@@ -5,7 +5,7 @@
 #ifndef ARTICULATED_VEHICLES_H
 #define ARTICULATED_VEHICLES_H
 
-uint CountArticulatedParts(EngineID engine_type);
+uint CountArticulatedParts(EngineID engine_type, bool purchase_window);
 void AddArticulatedParts(Vehicle **vl, VehicleType type);
 
 #endif /* ARTICULATED_VEHICLES_H */