1 files changed, 1 insertions, 0 deletions
diff --git a/bignum.c b/bignum.c
index 01c882476e..5992662d42 100644
--- a/bignum.c
+++ b/bignum.c
@@ -206,6 +206,7 @@ rb_quad_pack(buf, val)
 	    q = BIGUP(q);
 	    q += ds[len];
 	}
+	if (!RBIGNUM(val)->sign) q = -q;
     }
     memcpy(buf, (char*)&q, SIZEOF_LONG_LONG);
 }