diff --git a/ChangeLog b/ChangeLog
index dd100cf8a4..f5280c81b8 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -2,6 +2,7 @@ Mon May 16 11:21:09 2011  NAKAMURA Usaku  <usa@ruby-lang.org>
 
 	* configure.in, win32/Makefile.sub (RUBY_SO_NAME): add CPU as prefix
 	  of RUBY_SO_NAME on x64/ia64 mswin/mingw.
+	  [Feature #4602]
 
 Mon May 16 08:00:05 2011  Eric Hodel  <drbrain@segment7.net>