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-rw-r--r--newgrf_engine.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/newgrf_engine.h b/newgrf_engine.h
index 547adf26f..e610f4050 100644
--- a/newgrf_engine.h
+++ b/newgrf_engine.h
@@ -25,7 +25,7 @@ SpriteID GetRotorOverrideSprite(EngineID engine, const Vehicle* v);
void SetEngineGRF(EngineID engine, uint32 grfid);
uint32 GetEngineGRFID(EngineID engine);
-uint16 GetVehicleCallback(byte callback, uint32 param1, uint32 param2, EngineID engine, const Vehicle *v);
+uint16 GetVehicleCallback(uint16 callback, uint32 param1, uint32 param2, EngineID engine, const Vehicle *v);
bool UsesWagonOverride(const Vehicle *v);
#define GetCustomVehicleSprite(v, direction) GetCustomEngineSprite(v->engine_type, v, direction)
#define GetCustomVehicleIcon(et, direction) GetCustomEngineSprite(et, NULL, direction)