1 files changed, 2 insertions, 1 deletions
diff --git a/numeric.c b/numeric.c
index 33ec3605e6..d5896fe2d3 100644
--- a/numeric.c
+++ b/numeric.c
@@ -1305,7 +1305,8 @@ fix_aref(fix, idx)
     long val = FIX2LONG(fix);
 
     if (TYPE(idx) == T_BIGNUM) {
-	if (val >= 0) return INT2FIX(0);
+	if (!RBIGNUM(idx)->sign || val >= 0)
+	    return INT2FIX(0);
 	return INT2FIX(1);
     }
     else {