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-rw-r--r--src/newgrf_canal.cpp2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/newgrf_canal.cpp b/src/newgrf_canal.cpp
index 9f4de9e4a..b62698a7b 100644
--- a/src/newgrf_canal.cpp
+++ b/src/newgrf_canal.cpp
@@ -50,7 +50,7 @@ static uint32 CanalGetVariable(const ResolverObject *object, byte variable, byte
case 0x80: {
uint z = GetTileZ(tile) / TILE_HEIGHT;
/* Return consistent height within locks */
- if (IsTileType(tile, MP_WATER) && IsLock(tile) && GetSection(tile) == LOCK_UPPER) z--;
+ if (IsTileType(tile, MP_WATER) && IsLock(tile) && GetSection(tile) >= 8) z--;
return z;
}