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-rw-r--r--pathfind.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/pathfind.h b/pathfind.h
index ec358b5db..748ec5ab9 100644
--- a/pathfind.h
+++ b/pathfind.h
@@ -66,7 +66,7 @@ typedef struct {
TileIndex tile;
int length;
} FindLengthOfTunnelResult;
-FindLengthOfTunnelResult FindLengthOfTunnel(TileIndex tile, uint direction);
+FindLengthOfTunnelResult FindLengthOfTunnel(TileIndex tile, DiagDirection direction);
void NewTrainPathfind(TileIndex tile, TileIndex dest, DiagDirection direction, NTPEnumProc* enum_proc, void* data);