diff --git a/ChangeLog b/ChangeLog
index c4b854826d..88b6d10c23 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -14,12 +14,6 @@ Tue Dec 29 12:48:34 2015  Nobuyoshi Nakada  <nobu@ruby-lang.org>
 	  just-allocated objects for workaround of Psych.
 	  [ruby-core:72501] [Bug #11884]
 
-Tue Dec 29 12:46:13 2015  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/ostruct.rb (OpenStruct): make respond_to? working on
-	  just-allocated objects for workaround of Psych.
-	  [ruby-core:72501] [Bug #11884]
-
 Tue Dec 29 10:35:00 2015  Kenta Murata  <mrkn@mrkn.jp>
 
 	* test/mkmf/test_have_func.rb (test_have_func):