diff --git a/ChangeLog b/ChangeLog
index 2b3d72cc45..329aeef870 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,7 +1,7 @@
 Mon Oct 30 18:35:33 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
 
-	* bignum.c (rb_big2str0): wrong allocation length.
-	  [ruby-dev:29710]
+	* bignum.c (rb_big2str0): wrong allocation length.  a patch from
+	  U.Nakamura <usa at garbagecollect.jp> [ruby-dev:29710]
 
 Mon Oct 30 12:34:02 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>