1 files changed, 6 insertions, 1 deletions
diff --git a/bignum.c b/bignum.c
index 3a317d0065..28b64d9f20 100644
--- a/bignum.c
+++ b/bignum.c
@@ -57,7 +57,12 @@ rb_cmpint(VALUE val, VALUE a, VALUE b)
     if (NIL_P(val)) {
 	rb_cmperr(a, b);
     }
-    if (FIXNUM_P(val)) return FIX2INT(val);
+    if (FIXNUM_P(val)) {
+        long l = FIX2LONG(val);
+        if (l > 0) return 1;
+        if (l < 0) return -1;
+        return 0;
+    }
     if (TYPE(val) == T_BIGNUM) {
 	if (BIGZEROP(val)) return 0;
 	if (RBIGNUM_SIGN(val)) return 1;