diff --git a/packages/ember-runtime/lib/mixins/promise_proxy.js b/packages/ember-runtime/lib/mixins/promise_proxy.js
index <HASH>..<HASH> 100644
--- a/packages/ember-runtime/lib/mixins/promise_proxy.js
+++ b/packages/ember-runtime/lib/mixins/promise_proxy.js
@@ -34,7 +34,7 @@ function tap(proxy, promise) {
 }
 
 /**
-  A low level mixin making ObjectProxy, ObjectController or ArrayController's promise aware.
+  A low level mixin making ObjectProxy, ObjectController or ArrayControllers promise-aware.
 
   ```javascript
   var ObjectPromiseController = Ember.ObjectController.extend(Ember.PromiseProxyMixin);
[DOC release] Fix tiny grammar mistakes in Ember.PromiseProxy docs