diff --git a/ChangeLog b/ChangeLog
index f695357b8e..34f1dc41da 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+Mon Jan 10 14:32:55 2011  Nobuyoshi Nakada  <nobu@ruby-lang.org>
+
+	* test/ruby/test_method.rb (TestMethod#test_define_method): method
+	  transplanting between class and module is impossible.
+
 Mon Jan 10 13:51:17 2011  Nobuyoshi Nakada  <nobu@ruby-lang.org>
 
 	* misc/rdoc-mode.el (rdoc-mode): show trailing whitespace.
diff --git a/test/ruby/test_method.rb b/test/ruby/test_method.rb
index da17ef5e9c..fa5f9988f5 100644
--- a/test/ruby/test_method.rb
+++ b/test/ruby/test_method.rb
@@ -197,6 +197,14 @@ class TestMethod < Test::Unit::TestCase
     assert_raise(TypeError) do
       Class.new.class_eval { define_method(:foo, Object.new) }
     end
+
+    assert_raise(TypeError) do
+      Module.new.module_eval {define_method(:foo, Base.instance_method(:foo))}
+    end
+
+    assert_raise(TypeError) do
+      Class.new.class_eval {define_method(:meth, M.instance_method(:meth))}
+    end
   end
 
   def test_clone