diff --git a/ChangeLog b/ChangeLog
index 9518b7114f..89397aefa0 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,5 @@
+Sat Sep 16 16:39:23 2006  Nobuyoshi Nakada  <nobu@ruby-lang.org>
+
 	* Makefile.in, common.in, instruby.rb, ext/extmk.rb, lib/mkmf.rb:
 	  use instruby.rb to install extensions instead of ext/extmk.rb.
 
@@ -11,6 +13,8 @@
 
 	* ext/pty/pty.c (freeDevice): not used.
 
+	* lib/mkmf.rb (checking_for): improved the messages.
+
 Sat Sep 16 11:03:49 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
 
 	* array.c (ary_shared_first): should create embedded copies