diff --git a/ChangeLog b/ChangeLog
index cd8e85c83e..3b85a498bc 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+Tue Apr 19 01:00:21 2011  Tajima Akio <artonx@yahoo.co.jp>
+
+	* test/ruby/test_io.rb (TestIO#test_cross_thread_close_fd):
+	  skip cross thread pipe close if windows
+
 Mon Apr 18 12:15:46 2011  NAKAMURA Usaku  <usa@ruby-lang.org>
 
 	* test/ruby/test_range.rb (TestRange#test_step_ruby_core_35753):
diff --git a/test/ruby/test_io.rb b/test/ruby/test_io.rb
index 3d086b3750..25e6ddbe7f 100644
--- a/test/ruby/test_io.rb
+++ b/test/ruby/test_io.rb
@@ -1811,6 +1811,7 @@ End
   end
 
   def test_cross_thread_close_fd
+    skip "cross thread close causes hung-up if pipe." if /mswin|bccwin|mingw/ =~ RUBY_PLATFORM
     with_pipe do |r,w|
       read_thread = Thread.new do
         begin