diff --git a/src/RoleInterface.php b/src/RoleInterface.php
index 6b9d734c..df75d79a 100644
--- a/src/RoleInterface.php
+++ b/src/RoleInterface.php
@@ -9,7 +9,7 @@
 
 namespace Zend\Permissions\Rbac;
 
-interface RoleInterface
+interface RoleInterface extends \RecursiveIterator
 {
     /**
      * Get the name of the role.