diff --git a/src/Adapter/Ldap.php b/src/Adapter/Ldap.php
index 0700416..e0e21df 100644
--- a/src/Adapter/Ldap.php
+++ b/src/Adapter/Ldap.php
@@ -32,7 +32,7 @@
  * @uses       Zend\Authentication\Adapter
  * @uses       Zend\Ldap\Ldap
  * @uses       Zend\Ldap\Exception
- * @uses       Zend\Ldap\Filter\Filter
+ * @uses       Zend\Ldap\Filter
  * @category   Zend
  * @package    Zend_Authentication
  * @subpackage Adapter
@@ -443,9 +443,9 @@ protected function _checkGroupMembership(\Zend\Ldap\Ldap $ldap, $canonicalName,
             $user = $dn;
         }
 
-        $groupName   = \Zend\Ldap\Filter\Filter::equals($adapterOptions['groupAttr'], $adapterOptions['group']);
-        $membership  = \Zend\Ldap\Filter\Filter::equals($adapterOptions['memberAttr'], $user);
-        $group       = \Zend\Ldap\Filter\Filter::andFilter($groupName, $membership);
+        $groupName   = \Zend\Ldap\Filter::equals($adapterOptions['groupAttr'], $adapterOptions['group']);
+        $membership  = \Zend\Ldap\Filter::equals($adapterOptions['memberAttr'], $user);
+        $group       = \Zend\Ldap\Filter::andFilter($groupName, $membership);
         $groupFilter = $adapterOptions['groupFilter'];
         if (!empty($groupFilter)) {
             $group = $group->addAnd($groupFilter);