diff --git a/ChangeLog b/ChangeLog
index e41653683c..a04e1b786e 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+Tue May  8 20:23:07 2007  Tadayoshi Funaba  <tadf@dotrb.org>
+
+	* lib/date/format.rb: reverted.
+
 Tue May  8 19:32:18 2007  Keiju Ishitsuka  <keiju@ruby-lang.org>
 
 	* lib/rational.rb: fix high-precision Rationals cannot be
diff --git a/lib/date/format.rb b/lib/date/format.rb
index 723aa6713a..e0edb45720 100644
--- a/lib/date/format.rb
+++ b/lib/date/format.rb
@@ -118,7 +118,7 @@ class Date
       end
 
       def method_missing(t, *args, &block)
-	t = "#{t}"
+	t = t.to_s
 	set = t.chomp!('=')
 	t = t.intern
 	if set