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-rw-r--r--src/tunnel_map.h4
1 files changed, 2 insertions, 2 deletions
diff --git a/src/tunnel_map.h b/src/tunnel_map.h
index 2a167055a..c4f68f729 100644
--- a/src/tunnel_map.h
+++ b/src/tunnel_map.h
@@ -38,8 +38,8 @@ static inline bool IsTunnelTile(TileIndex t)
}
TileIndex GetOtherTunnelEnd(TileIndex);
-bool IsTunnelInWay(TileIndex, uint z);
-bool IsTunnelInWayDir(TileIndex tile, uint z, DiagDirection dir);
+bool IsTunnelInWay(TileIndex, int z);
+bool IsTunnelInWayDir(TileIndex tile, int z, DiagDirection dir);
/**
* Makes a road tunnel entrance