--- activesupport-1.1.1/lib/active_support/clean_logger.rb.orig	2005-10-19 18:18:09.000000000 -0400
+++ activesupport-1.1.1/lib/active_support/clean_logger.rb	2005-10-19 18:07:00.000000000 -0400
@@ -10,9 +10,11 @@
   end
 
   private
-    remove_const "Format"
+    if const_defined?(:Format) # Not defined in Ruby 1.8.3
+      remove_const "Format"
+    end
     Format = "%s\n"
-    def format_message(severity, timestamp, msg, progname)
+    def format_message(severity, timestamp, progname, msg)
       Format % [msg]
     end
 end