diff --git a/lib/Doctrine/Node/NestedSet/LevelOrderIterator.php b/lib/Doctrine/Node/NestedSet/LevelOrderIterator.php
index cadaec3e2..dc5c3ac5c 100644
--- a/lib/Doctrine/Node/NestedSet/LevelOrderIterator.php
+++ b/lib/Doctrine/Node/NestedSet/LevelOrderIterator.php
@@ -29,5 +29,5 @@
  * @version     $Revision$
  * @author      Joe Simms <joe.simms@websites4.com>
  */
-class Doctrine_Node_NestedSet_LevelOrderIterator implements Iterator
+class Doctrine_Node_NestedSet_LevelOrderIterator
 {}
diff --git a/lib/Doctrine/Node/NestedSet/PostOrderIterator.php b/lib/Doctrine/Node/NestedSet/PostOrderIterator.php
index 12d9d8670..6c9bcba4c 100644
--- a/lib/Doctrine/Node/NestedSet/PostOrderIterator.php
+++ b/lib/Doctrine/Node/NestedSet/PostOrderIterator.php
@@ -29,5 +29,5 @@
  * @version     $Revision$
  * @author      Joe Simms <joe.simms@websites4.com>
  */
-class Doctrine_Node_NestedSet_PostOrderIterator implements Iterator
+class Doctrine_Node_NestedSet_PostOrderIterator
 {}