diff --git a/actionpack/CHANGELOG b/actionpack/CHANGELOG
index de5543289b..33e5fa417b 100644
--- a/actionpack/CHANGELOG
+++ b/actionpack/CHANGELOG
@@ -1,5 +1,7 @@
 *SVN*
 
+* Fixed :overwrite_param so it doesn't delete but reject elements from @request.parameters #982 [raphinou@yahoo.com]
+
 * Added :method option to verify for ensuring that either GET, POST, etc is allowed #984 [Jamis Buck]
 
 * Added options to set cc, bcc, subject, and body for UrlHelper#mail_to #966 [DeLynn]
diff --git a/actionpack/lib/action_controller/url_rewriter.rb b/actionpack/lib/action_controller/url_rewriter.rb
index 6d7c99eff0..e79ac4daa1 100644
--- a/actionpack/lib/action_controller/url_rewriter.rb
+++ b/actionpack/lib/action_controller/url_rewriter.rb
@@ -38,7 +38,7 @@ module ActionController
         path, extras = Routing::Routes.generate(options, @request)
 
         if extras[:overwrite_params]
-          params_copy = @request.parameters.delete_if { |k,v| ["controller","action"].include? k }
+          params_copy = @request.parameters.reject { |k,v| ["controller","action"].include? k }
           params_copy.update extras[:overwrite_params]
           extras.delete(:overwrite_params)
           extras.update(params_copy)