--- a/src/newgrf_cargo.h	Wed Jul 25 19:03:23 2007 +0000
+++ b/src/newgrf_cargo.h	Wed Jul 25 19:06:29 2007 +0000
@@ -5,6 +5,8 @@
 #ifndef NEWGRF_CARGO_H
 #define NEWGRF_CARGO_H
 
+#include "newgrf_callbacks.h"
+
 enum {
 	CC_NOAVAILABLE  = 0,
 	CC_PASSENGERS   = 1 << 0,
@@ -26,7 +28,7 @@
 struct GRFFile;
 
 SpriteID GetCustomCargoSprite(const CargoSpec *cs);
-uint16 GetCargoCallback(uint16 callback, uint32 param1, uint32 param2, const CargoSpec *cs);
+uint16 GetCargoCallback(CallbackID callback, uint32 param1, uint32 param2, const CargoSpec *cs);
 CargoID GetCargoTranslation(uint8 cargo, const GRFFile *grffile);
 uint8 GetReverseCargoTranslation(CargoID cargo, const GRFFile *grffile);