diff --git a/ChangeLog b/ChangeLog
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@@ -1,7 +1,7 @@
 Tue Dec 13 23:43:48 2011  CHIKANAGA Tomoyuki  <nagachika00@gmail.com>
 
 	* error.c (name_err_mesg_to_str): clear rb_thread_t::errinfo when
-	  ignore exception under rb_protect().
+	  ignore exception under rb_protect(). [ruby-core:41612] [Bug #5755]
 
 	* test/ruby/test_exception.rb (test_exception_in_name_error_to_str):
 	  add a corresponding test.