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-rw-r--r--src/table/autorail.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/table/autorail.h b/src/table/autorail.h
index d94747ec1..3d47e33e3 100644
--- a/src/table/autorail.h
+++ b/src/table/autorail.h
@@ -9,7 +9,7 @@
*/
// mark invalid tiles red
-#define RED(c) c | PALETTE_SEL_TILE_RED
+#define RED(c) -c
// table maps each of the six rail directions and tileh combinations to a sprite
// invalid entries are required to make sure that this array can be quickly accessed