diff --git a/ChangeLog b/ChangeLog
index c3ee31abde..5f47b7800c 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,9 @@
+Wed Mar 20 17:47:53 2013  NAKAMURA Usaku  <usa@ruby-lang.org>
+
+	* test/win32ole/test_err_in_callback.rb (TestErrInCallBack#setup):
+	  allow using different root for source and build directories.
+	  this may fixes a minor problem of r39834.
+
 Wed Mar 20 16:40:48 2013  Hiroshi Shirosaki  <h.shirosaki@gmail.com>
 
 	* test/ruby/test_signal.rb (test_hup_me): skip if HUP isn't supported.
diff --git a/test/win32ole/test_err_in_callback.rb b/test/win32ole/test_err_in_callback.rb
index 9a430089fb..d39ea12c54 100644
--- a/test/win32ole/test_err_in_callback.rb
+++ b/test/win32ole/test_err_in_callback.rb
@@ -20,9 +20,10 @@ if defined?(WIN32OLE)
         @ruby = "." + sep + CONFIG["RUBY_INSTALL_NAME"]
         cwd = Pathname.new(File.expand_path('.'))
         @iopt = $:.map {|e|
-          " -I " + Pathname.new(e).relative_path_from(cwd).to_s
+          " -I " + (Pathname.new(e).relative_path_from(cwd).to_s rescue e)
         }.join("")
-        @script = Pathname.new(File.join(File.dirname(__FILE__), "err_in_callback.rb")).relative_path_from(cwd).to_s
+        script = File.join(File.dirname(__FILE__), "err_in_callback.rb")
+        @script = Pathname.new(script).relative_path_from(cwd).to_s rescue script
       end
     end