diff --git a/ChangeLog b/ChangeLog
index c0f2a4bcb6..089ac99090 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+Fri Jan 11 23:34:48 2013  Kazuhiro NISHIYAMA  <zn@mbf.nifty.com>
+
+	* ruby.c (usage): sort --*-encoding in help. (same order of -E)
+
 Fri Jan 11 16:56:29 2013  Nobuyoshi Nakada  <nobu@ruby-lang.org>
 
 	* tool/mkconfig.rb: use configured libdir value to fix
diff --git a/ruby.c b/ruby.c
index 0ec8219745..9e112623a9 100644
--- a/ruby.c
+++ b/ruby.c
@@ -174,8 +174,8 @@ usage(const char *name, int help)
 	M("--copyright",                   "", "print the copyright"),
 	M("--enable=feature[,...]",	   ", --disable=feature[,...]",
 	  "enable or disable features"),
-	M("--internal-encoding=encoding",  ", --external-encoding=encoding",
-	  "specify the default internal and external character encoding"),
+	M("--external-encoding=encoding",  ", --internal-encoding=encoding",
+	  "specify the default external or internal character encoding"),
 	M("--version",                     "", "print the version"),
 	M("--help",			   "", "show this message, -h for short message"),
     };