1 files changed, 1 insertions, 1 deletions
diff --git a/src/openttd.h b/src/openttd.h
index 6f2b1556c..fda9893d6 100644
--- a/src/openttd.h
+++ b/src/openttd.h
@@ -353,7 +353,7 @@ struct TileDesc {
 	StringID str;
 	Owner owner;
 	Date build_date;
-	uint32 dparam[2];
+	uint64 dparam[2];
 };
 
 struct ViewportSign {