diff --git a/classes/Memcached_DataObject.php b/classes/Memcached_DataObject.php
index 360fb44243..70e9e351d5 100644
--- a/classes/Memcached_DataObject.php
+++ b/classes/Memcached_DataObject.php
@@ -28,9 +28,13 @@ class Memcached_DataObject extends DB_DataObject
      * this data object when it's unset or goes out of scope.
      * DB_DataObject doesn't do this yet by itself.
      */
+
     function __destruct()
     {
         $this->free();
+        if (method_exists('DB_DataObject', '__destruct')) {
+            parent::__destruct();
+        }
     }
 
     function &staticGet($cls, $k, $v=null)