diff --git a/ChangeLog b/ChangeLog
index abfd3a41f9..c991f320ae 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,9 @@
+Tue Feb  1 15:12:26 2011  NAKAMURA Usaku  <usa@ruby-lang.org>
+
+	* test/ruby/test_require.rb (TestRequire#test_require_with_unc):
+	  use ``127.0.0.1'' instead of ``localhost'' as host name, because
+	  XP or earlier cannot resolv it as NBT hostname.
+
 Tue Feb  1 13:20:39 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
 
 	* test/benchmark/test_benchmark.rb (#capture_bench_output):
diff --git a/test/ruby/test_require.rb b/test/ruby/test_require.rb
index c764939b1e..14c26df39f 100644
--- a/test/ruby/test_require.rb
+++ b/test/ruby/test_require.rb
@@ -92,7 +92,7 @@ class TestRequire < Test::Unit::TestCase
   end
 
   def test_require_with_unc
-    assert(system(File.expand_path(EnvUtil.rubybin).sub(/\A(\w):/, '//localhost/\1$/'), "-rabbrev", "-e0"))
+    assert(system(File.expand_path(EnvUtil.rubybin).sub(/\A(\w):/, '//127.0.0.1/\1$/'), "-rabbrev", "-e0"))
   end if /mswin|mingw/ =~ RUBY_PLATFORM
 
   def test_define_class