diff --git a/lib/application.js b/lib/application.js
index fbea4a4d3..c3edd5ab6 100644
--- a/lib/application.js
+++ b/lib/application.js
@@ -7,7 +7,7 @@
 
 const isGeneratorFunction = require('is-generator-function');
 const debug = require('debug')('koa:application');
-const Emitter = require('events').EventEmitter;
+const Emitter = require('events');
 const onFinished = require('on-finished');
 const response = require('./response');
 const compose = require('koa-compose');