diff --git a/lib/application.js b/lib/application.js
index e7c5a26..ab5a038 100644
--- a/lib/application.js
+++ b/lib/application.js
@@ -160,6 +160,9 @@ app.onerror = function(err){
 
 function respond(next){
   return function *respond(){
+    this.status = 200;
+    if (this.app.poweredBy) this.set('X-Powered-By', 'koa');
+
     yield next;
 
     var app = this.app;
@@ -222,10 +225,7 @@ function respond(next){
  * @api private
  */
 
-function *downstream() {
-  this.status = 200;
-  if (this.app.poweredBy) this.set('X-Powered-By', 'koa');
-}
+function *downstream(){}
 
 /**
  * Create a new `Context` constructor.