diff --git a/ChangeLog b/ChangeLog
index 3e0dacee49..ca9777be6b 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -57,11 +57,6 @@ Mon Feb 18 10:09:54 2013  Nobuyoshi Nakada  <nobu@ruby-lang.org>
 	* configure.in (unexpand_shvar): regularize a shell variable by
 	  unexpanding shell variables in it.
 
-Mon Feb 18 10:08:28 2013  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (unexpand_shvar): regularize a shell variable by
-	  unexpanding shell variables in it.
-
 Sun Feb 17 20:55:44 2013  Nobuyoshi Nakada  <nobu@ruby-lang.org>
 
 	* compar.c (rb_invcmp): compare by inversed comarison, with preventing