diff --git a/ChangeLog b/ChangeLog
index 4064bb6832..38a72703f7 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,6 +1,7 @@
 Thu Jul 12 21:38:02 2007  NAKAMURA Usaku  <usa@ruby-lang.org>
 
 	* insns.def (opt_succ): use LONG_MAX as maximum Fixnum VALUE.
+	  [ruby-dev:31199]
 
 Thu Jul 12 18:42:18 2007  Tanaka Akira  <akr@fsij.org>