diff --git a/ChangeLog b/ChangeLog
index afa3f53f46..68d159cc8e 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+Wed Sep 16 19:27:43 2009  Yukihiro Matsumoto  <matz@ruby-lang.org>
+
+	* test/ruby/test_thread.rb (TestThread#test_recursive): remove
+	  implementation dependent test.
+
 Wed Sep 16 17:42:52 2009  NAKAMURA Usaku  <usa@ruby-lang.org>
 
 	* win32/Makefile.sub (config.status): install-capi needs docdir.  And,
diff --git a/test/ruby/test_thread.rb b/test/ruby/test_thread.rb
index 397da2c3f7..a0eba3dbd4 100644
--- a/test/ruby/test_thread.rb
+++ b/test/ruby/test_thread.rb
@@ -450,15 +450,6 @@ class TestThread < Test::Unit::TestCase
     m.unlock
   end
 
-  def test_recursive_error
-    o = Object.new
-    def o.inspect
-      Thread.current[:__recursive_key__][:inspect] = nil
-      super
-    end
-    assert_raise(TypeError) { [o].inspect }
-  end
-
   def test_recursive_outer
     arr = []
     obj = Struct.new(:foo, :visited).new(arr, false)