1 files changed, 1 insertions, 1 deletions
diff --git a/bignum.c b/bignum.c
index b5636691c4..b028434b04 100644
--- a/bignum.c
+++ b/bignum.c
@@ -6284,7 +6284,7 @@ rb_big_abs(VALUE x)
 static VALUE
 rb_big_size(VALUE big)
 {
-    return LONG2FIX(RBIGNUM_LEN(big)*SIZEOF_BDIGITS);
+    return SIZET2NUM(BIGSIZE(big));
 }
 
 /*