diff --git a/addon/system/model/errors.js b/addon/system/model/errors.js
index 4e26a004f1c..1412cd01c87 100644
--- a/addon/system/model/errors.js
+++ b/addon/system/model/errors.js
@@ -36,8 +36,8 @@ var MapWithDefault = Ember.MapWithDefault;
   user.save();
   ```
 
-  Your backend data store might return a response that looks like
-  this. This response will be used to populate the error object.
+  Your backend data store might return a response with status code 422 (Unprocessable Entity)
+  and that looks like this. This response will be used to populate the error object.
 
   ```javascript
   {