diff --git a/ChangeLog b/ChangeLog
index dde7e06be0..afa454e353 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+Fri Feb 22 17:36:23 2013  NARUSE, Yui  <naruse@ruby-lang.org>
+
+	* test/test_rbconfig.rb (TestRbConfig): fix r39372.
+	  It must see RbConfig::CONFIG instead of CONFIG.
+
 Fri Feb 22 14:55:41 2013  Naohisa Goto  <ngotogenome@gmail.com>
 
 	* signal.c (ruby_abort): fix typo in r39354 [Bug #5014]
diff --git a/test/test_rbconfig.rb b/test/test_rbconfig.rb
index aa44c4edbf..36204500bd 100644
--- a/test/test_rbconfig.rb
+++ b/test/test_rbconfig.rb
@@ -5,7 +5,7 @@ require 'shellwords'
 class TestRbConfig < Test::Unit::TestCase
   @@with_config = {}
 
-  Shellwords::shellwords(CONFIG["configure_args"]).grep(/\A--with-([^=]*)=(.*)/) do
+  Shellwords::shellwords(RbConfig::CONFIG["configure_args"]).grep(/\A--with-([^=]*)=(.*)/) do
     @@with_config[$1.tr('_', '-')] = $2
   end