diff --git a/stepmania/src/lua-5.1/src/lundump.c b/stepmania/src/lua-5.1/src/lundump.c
index f1fe7e54c8..5d9f2b7179 100644
--- a/stepmania/src/lua-5.1/src/lundump.c
+++ b/stepmania/src/lua-5.1/src/lundump.c
@@ -67,7 +67,7 @@ static int LoadInt(LoadState* S)
  LoadVar(S,x);
  if (S->flip)
   x = Swap32(x);
- IF ((int32_t)x<0, "bad integer");
+ if ((uint32_t)x<0, "bad integer");
  return x;
 }