diff --git a/ChangeLog b/ChangeLog
index e140a2c5c1..1362de0bf3 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,6 +1,7 @@
 Fri Oct 25 02:55:01 2002  Minero Aoki  <aamine@loveruby.net>
 
 	* string.c (rb_str_split_m): RSTRING(str)->ptr might become NULL.
+	  [ruby-dev:18581]
 
 Thu Oct 24 21:57:02 2002  Nobuyoshi Nakada  <nobu.nokada@softhome.net>