diff --git a/ChangeLog b/ChangeLog
index acced5e007..caa7a81a8f 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+Mon May  7 10:16:30 2012  Nobuyoshi Nakada  <nobu@ruby-lang.org>
+
+	* test/rubygems/test_gem_installer.rb (TestGemInstaller#test_dir): fix
+	  argument order.  expected value must come first.
+
 Mon May 07 09:14:11 2012  Martin Bosslet  <Martin.Bosslet@googlemail.com>
 
 	* ext/openssl/ossl_ssl.c: support TLSv1.1 & TLSv1.2. Add 
diff --git a/test/rubygems/test_gem_installer.rb b/test/rubygems/test_gem_installer.rb
index d40fbc93bf..848151eeef 100644
--- a/test/rubygems/test_gem_installer.rb
+++ b/test/rubygems/test_gem_installer.rb
@@ -1217,7 +1217,7 @@ load Gem.bin_path('a', 'executable', version)
   def test_dir
     util_setup_install
 
-    assert_match @installer.dir, %r!/installer/gems/a-2$!
+    assert_match %r!/installer/gems/a-2\z!, @installer.dir
   end
 
   def old_ruby_required