diff --git a/packages/ember-metal/lib/expand_properties.js b/packages/ember-metal/lib/expand_properties.js
index c708429a237..0befe75e217 100644
--- a/packages/ember-metal/lib/expand_properties.js
+++ b/packages/ember-metal/lib/expand_properties.js
@@ -22,7 +22,7 @@ var SPLIT_REGEX = /\{|\}/;
   Ember.expandProperties('foo.bar', echo);              //=> 'foo.bar'
   Ember.expandProperties('{foo,bar}', echo);            //=> 'foo', 'bar'
   Ember.expandProperties('foo.{bar,baz}', echo);        //=> 'foo.bar', 'foo.baz'
-  Ember.expandProperties('{foo,bar}.baz', echo);        //=> '{foo,bar}.baz'
+  Ember.expandProperties('{foo,bar}.baz', echo);        //=> 'foo.baz', 'bar.baz'
   Ember.expandProperties('foo.{bar,baz}.@each', echo)   //=> 'foo.bar.@each', 'foo.baz.@each'
   Ember.expandProperties('{foo,bar}.{spam,eggs}', echo) //=> 'foo.spam', 'foo.eggs', 'bar.spam', 'bar.eggs'
   Ember.expandProperties('{foo}.bar.{baz}')             //=> 'foo.bar.baz'