1 files changed, 1 insertions, 0 deletions
diff --git a/src/ship.h b/src/ship.h
index 6e696f088..e277f91c4 100644
--- a/src/ship.h
+++ b/src/ship.h
@@ -41,6 +41,7 @@ struct Ship: public Vehicle {
 
 	const char *GetTypeString() { return "ship"; }
 	void MarkDirty();
+	void UpdateDeltaXY(Direction direction);
 };
 
 #endif /* SHIP_H */