diff --git a/ChangeLog b/ChangeLog
index ca1452ae3c..560ce01468 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -3,11 +3,6 @@ Sun Dec 20 00:29:00 2015  Nobuyoshi Nakada  <nobu@ruby-lang.org>
 	* proc.c (rb_proc_get_iseq): proc made from symbol does not have
 	  iseq.  fix infinite loop.  [ruby-core:72381] [Bug #11845]
 
-Sun Dec 20 00:28:51 2015  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* proc.c (rb_proc_get_iseq): proc made from symbol does not have
-	  iseq.  fix infinite loop.  [ruby-core:72381] [Bug #11845]
-
 Sat Dec 19 20:06:10 2015  Naohisa Goto  <ngotogenome@gmail.com>
 
 	* enc/windows_1250.c: Should not use C++ style comments (C99 feature).