diff --git a/packages/ember-runtime/lib/mixins/evented.js b/packages/ember-runtime/lib/mixins/evented.js
index <HASH>..<HASH> 100644
--- a/packages/ember-runtime/lib/mixins/evented.js
+++ b/packages/ember-runtime/lib/mixins/evented.js
@@ -83,7 +83,7 @@ Ember.Evented = Ember.Mixin.create({
     event.
 
     ```javascript
-    person.on('didEat', food) {
+    person.on('didEat', function(food) {
       console.log('person ate some ' + food);
     });
Fix typo in evented mixin.