--- a/src/water.h	Sat Jul 26 14:58:08 2008 +0000
+++ b/src/water.h	Sat Jul 26 16:14:10 2008 +0000
@@ -15,6 +15,6 @@
 void DrawShoreTile(Slope tileh);
 
 void MakeWaterKeepingClass(TileIndex tile, Owner o);
-void SetWaterClassDependingOnSurroundings(TileIndex t);
+void SetWaterClassDependingOnSurroundings(TileIndex t, bool include_invalid_water_class);
 
 #endif /* WATER_H */