diff --git a/ChangeLog b/ChangeLog
index bc9cb7df9f..1ce923a9d4 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -11,7 +11,7 @@ Sat Jan  1 11:03:58 2011  Nobuyoshi Nakada  <nobu@ruby-lang.org>
 
 	* NEWS (optparse): shell completion support.
 
-	* misc/README (rb_optparse.{bash,zzh}): for shell completion.
+	* misc/README (rb_optparse.{bash,zsh}): for shell completion.
 
 	* include/ruby/intern.h (VALUE rb_ary_join): I have never seen
 	  this function anywhere.