1 files changed, 1 insertions, 0 deletions
diff --git a/src/aircraft.h b/src/aircraft.h
index 1baad94c7..a66b3a177 100644
--- a/src/aircraft.h
+++ b/src/aircraft.h
@@ -132,6 +132,7 @@ struct Aircraft : public Vehicle {
 
 	const char *GetTypeString() { return "aircraft"; }
 	void MarkDirty();
+	void UpdateDeltaXY(Direction direction);
 };
 
 #endif /* AIRCRAFT_H */