diff --git a/ChangeLog b/ChangeLog
index 9bbdc62e75..e0a72d325b 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,9 @@
+Mon Apr 16 09:42:50 2012  NAKAMURA Usaku  <usa@ruby-lang.org>
+
+	* lib/rubygems/remote_fetcher.rb (Gem::RemoteFetcher#download): should
+	  use File.identical? to chech the identicality of the files.
+	  this fixed an error of a test on Windows.
+
 Sat Apr 14 12:55:03 2012  Nobuyoshi Nakada  <nobu@ruby-lang.org>
 
 	* configure.in (UNREACHABLE): gcc 4.4 eliminates unreachable code
diff --git a/lib/rubygems/remote_fetcher.rb b/lib/rubygems/remote_fetcher.rb
index e0d12987f3..9363052052 100644
--- a/lib/rubygems/remote_fetcher.rb
+++ b/lib/rubygems/remote_fetcher.rb
@@ -174,7 +174,7 @@ class Gem::RemoteFetcher
 
       begin
         FileUtils.cp source_path, local_gem_path unless
-          File.expand_path(source_path) == File.expand_path(local_gem_path)
+          File.identical?(source_path, local_gem_path)
       rescue Errno::EACCES
         local_gem_path = source_uri.to_s
       end