diff --git a/ChangeLog b/ChangeLog
index 69599e5076..4230d95e8d 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+Sat Oct 25 11:12:40 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
+
+	* ruby.c (usage): updated the description of -E option.
+
 Sat Oct 25 09:54:10 2008  James Edward Gray II  <jeg2@ruby-lang.org>
 
   * lib/csv.rb:  Fixed a bug in read_to_char() that would slurp
diff --git a/ruby.c b/ruby.c
index ba30be6eff..f2993bac0d 100644
--- a/ruby.c
+++ b/ruby.c
@@ -134,7 +134,7 @@ usage(const char *name)
 	"-Cdirectory     cd to directory, before executing your script",
 	"-d              set debugging flags (set $DEBUG to true)",
 	"-e 'command'    one line of script. Several -e's allowed. Omit [programfile]",
-	"-Eencoding      specifies the character encoding for the program codes",
+	"-Eex[:in]       specify the default external and internal character encodings",
 	"-Fpattern       split() pattern for autosplit (-a)",
 	"-i[extension]   edit ARGV files in place (make backup if extension supplied)",
 	"-Idirectory     specify $LOAD_PATH directory (may be used more than once)",