1 files changed, 2 insertions, 2 deletions
diff --git a/actionpack/lib/action_controller/vendor/rack-1.0/rack/directory.rb b/actionpack/lib/action_controller/vendor/rack-1.0/rack/directory.rb
index 0f37df3a86..acdd3029d3 100644
--- a/actionpack/lib/action_controller/vendor/rack-1.0/rack/directory.rb
+++ b/actionpack/lib/action_controller/vendor/rack-1.0/rack/directory.rb
@@ -70,7 +70,7 @@ table { width:100%%; }
       return unless @path_info.include? ".."
 
       body = "Forbidden\n"
-      size = body.respond_to?(:bytesize) ? body.bytesize : body.size
+      size = Rack::Utils.bytesize(body)
       return [403, {"Content-Type" => "text/plain","Content-Length" => size.to_s}, [body]]
     end
 
@@ -122,7 +122,7 @@ table { width:100%%; }
 
     def entity_not_found
       body = "Entity not found: #{@path_info}\n"
-      size = body.respond_to?(:bytesize) ? body.bytesize : body.size
+      size = Rack::Utils.bytesize(body)
       return [404, {"Content-Type" => "text/plain", "Content-Length" => size.to_s}, [body]]
     end