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-rw-r--r--src/newgrf_commons.cpp2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/newgrf_commons.cpp b/src/newgrf_commons.cpp
index e7ef0a01a..443a61e47 100644
--- a/src/newgrf_commons.cpp
+++ b/src/newgrf_commons.cpp
@@ -447,7 +447,7 @@ uint32 GetNearbyTileInformation(TileIndex tile)
/* Fake tile type for trees on shore */
if (IsTileType(tile, MP_TREES) && GetTreeGround(tile) == TREE_GROUND_SHORE) tile_type = MP_WATER;
- uint z;
+ int z;
Slope tileh = GetTilePixelSlope(tile, &z);
/* Return 0 if the tile is a land tile */
byte terrain_type = (HasTileWaterClass(tile) ? (GetWaterClass(tile) + 1) & 3 : 0) << 5 | GetTerrainType(tile) << 2 | (tile_type == MP_WATER ? 1 : 0) << 1;