From 6c3166a169c922d7ffb4feaea3684c4dd0168ef6 Mon Sep 17 00:00:00 2001
From: Aaron Patterson <aaron.patterson@gmail.com>
Date: Thu, 18 Oct 2012 17:16:33 -0700
Subject: prevent people from accidentally modifying the filter word

---
 actionpack/lib/action_dispatch/http/parameter_filter.rb | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/actionpack/lib/action_dispatch/http/parameter_filter.rb b/actionpack/lib/action_dispatch/http/parameter_filter.rb
index 4edf235717..0939418afa 100644
--- a/actionpack/lib/action_dispatch/http/parameter_filter.rb
+++ b/actionpack/lib/action_dispatch/http/parameter_filter.rb
@@ -15,7 +15,7 @@ module ActionDispatch
 
     private
 
-      FILTERED = '[FILTERED]'
+      FILTERED = '[FILTERED]'.freeze
 
       def compiled_filter
         @compiled_filter ||= begin
-- 
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