diff --git a/src/OAuth2/Client/Provider/User.php b/src/OAuth2/Client/Provider/User.php
index 5fc22d9..0dc6004 100644
--- a/src/OAuth2/Client/Provider/User.php
+++ b/src/OAuth2/Client/Provider/User.php
@@ -33,7 +33,7 @@ class User implements \IteratorAggregate {
 
     public function getIterator()
     {
-        return new ArrayIterator($this);
+        return new \ArrayIterator($this);
     }
 
 }