diff --git a/ChangeLog b/ChangeLog
index c30cf930d4..e3752d2779 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,7 +1,8 @@
 Wed Mar 27 11:09:17 2013  Akinori MUSHA  <knu@iDaemons.org>
 
 	* array.c (rb_ary_collect), enum.c (enum_collect): rb_warn() is a
-	  bit too noisy when RubyGems, so change it to rb_warning().
+	  bit too noisy when RubyGems still uses map() that way, so change
+	  it to rb_warning().
 
 Sun Feb 24 02:03:14 2013  Tanaka Akira  <akr@fsij.org>