diff --git a/ChangeLog b/ChangeLog
index 576f8c6d9a..1b9e031964 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+Sun Sep 23 21:42:22 2012  Nobuyoshi Nakada  <nobu@ruby-lang.org>
+
+	* lib/mkmf.rb (MakeMakefile#mkintpath): not a global function now.
+
 Sun Sep 23 02:33:37 2012  Benoit Daloze  <eregontp@gmail.com>
 
 	* complex.c: Fix examples of r36993.
diff --git a/lib/mkmf.rb b/lib/mkmf.rb
index 07c6143af3..808aeaa4e5 100644
--- a/lib/mkmf.rb
+++ b/lib/mkmf.rb
@@ -1720,7 +1720,7 @@ SRC
       end
     end
   end
-  unless defined?(mkintpath)
+  unless method_defined?(:mkintpath)
     def mkintpath(path)
       path
     end