diff --git a/ChangeLog b/ChangeLog
index b1275986c5..7c61dbb102 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,8 +1,9 @@
-Sun Oct 19 21:12:51 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
+Sun Oct 19 21:19:16 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
 
 	* common.mk (srcs): removed ID_H_TARGET.
 
 	* tool/generic_erb.rb: always overwrites if no if-change option.
+	  sends the result to stdout if no output option.
 
 	* template/id.h.tmpl: shows which token differs.
 
diff --git a/tool/generic_erb.rb b/tool/generic_erb.rb
index f7ef48deea..3ddfd7f653 100644
--- a/tool/generic_erb.rb
+++ b/tool/generic_erb.rb
@@ -29,4 +29,6 @@ if output
     end
     FileUtils.touch(timestamp)
   end
+else
+  print result
 end