diff --git a/trunk/includes/class/class.LSldapObject.php b/trunk/includes/class/class.LSldapObject.php
index f9aaf093..604834b0 100644
--- a/trunk/includes/class/class.LSldapObject.php
+++ b/trunk/includes/class/class.LSldapObject.php
@@ -617,8 +617,14 @@ class LSldapObject {
    */ 
   function getObjectFilter() {
     if(!isset($this -> config['objectclass'])) return;
-    foreach ($this -> config['objectclass'] as $class)
+    $filter="(&";
+    foreach ($this -> config['objectclass'] as $class) {
       $filter.='(objectClass='.$class.')';
+    }
+    $filter.=')';
+    if ($this -> config['filter']) {
+      $filter="(&(".$this -> config['filter'].")$filter)";
+    }
     return $filter;
   }