diff --git a/ChangeLog b/ChangeLog
index b3136dd241..acb63351df 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+Sun Mar 22 22:07:40 2015  Kouhei Sutou  <kou@cozmixng.org>
+
+	* doc/etc.rd.ja: Fix wrong coding for Emacs.
+
 Sun Mar 22 09:53:15 2015  Nobuyoshi Nakada  <nobu@ruby-lang.org>
 
 	* tool/make-snapshot (package): add default CONFIGURE name to
diff --git a/doc/etc.rd.ja b/doc/etc.rd.ja
index 877356bb6e..b4ff6ed04e 100644
--- a/doc/etc.rd.ja
+++ b/doc/etc.rd.ja
@@ -1,4 +1,4 @@
-# etc.rd.ja -  -*- mode: rd; coding: euc-jp; -*- created at: Fri Jul 14 00:47:15 JST 1995
+# etc.rd.ja -  -*- mode: rd; coding: utf-8; -*- created at: Fri Jul 14 00:47:15 JST 1995
 =begin
 
 = Etc(モジュール)