--- lib/webrick/httpresponse.rb.old 2010-03-31 18:47:40.000000000 -0700 +++ lib/webrick/httpresponse.rb 2010-03-31 18:48:21.000000000 -0700 @@ -209,7 +209,7 @@ @keep_alive = false self.status = HTTPStatus::RC_INTERNAL_SERVER_ERROR end - @header['content-type'] = "text/html" + @header['content-type'] = "text/html; charset=utf-8" if respond_to?(:create_error_page) create_error_page()