diff --git a/lib/application.js b/lib/application.js
index 741fff9..d0ceba0 100644
--- a/lib/application.js
+++ b/lib/application.js
@@ -131,8 +131,9 @@ module.exports = class Application extends Emitter {
     return (req, res) => {
       res.statusCode = 404;
       const ctx = this.createContext(req, res);
-      onFinished(res, ctx.onerror);
-      fn(ctx).then(() => respond(ctx)).catch(ctx.onerror);
+      const onerror = err => ctx.onerror(err);
+      onFinished(res, onerror);
+      fn(ctx).then(() => respond(ctx)).catch(onerror);
     };
   }
 
@@ -152,7 +153,6 @@ module.exports = class Application extends Emitter {
     request.ctx = response.ctx = context;
     request.response = response;
     response.request = request;
-    context.onerror = context.onerror.bind(context);
     context.originalUrl = request.originalUrl = req.url;
     context.cookies = new Cookies(req, res, {
       keys: this.keys,
diff --git a/lib/response.js b/lib/response.js
index 01c5c1d..87ece39 100644
--- a/lib/response.js
+++ b/lib/response.js
@@ -164,7 +164,7 @@ module.exports = {
     // stream
     if ('function' == typeof val.pipe) {
       onFinish(this.res, destroy.bind(null, val));
-      ensureErrorHandler(val, this.ctx.onerror);
+      ensureErrorHandler(val, err => this.ctx.onerror(err));
 
       // overwriting
       if (null != original && original != val) this.remove('Content-Length');