diff --git a/lib/response.js b/lib/response.js
index dfb495f..aa42306 100644
--- a/lib/response.js
+++ b/lib/response.js
@@ -210,8 +210,11 @@ module.exports = {
    */
 
   redirect: function(url, alt){
+    // location
     if ('back' == url) url = this.ctx.get('Referrer') || alt || '/';
     this.set('Location', url);
+
+    // status
     if (!status.redirect[this.status]) this.status = 302;
 
     // html