diff --git a/lib/Net/LDAP3.php b/lib/Net/LDAP3.php
index 815eeac5e3fca6b54b15b787576540258e04d081..0fc63f27f03c11e305ad6f7b964bb1bf97016491 100644
--- a/lib/Net/LDAP3.php
+++ b/lib/Net/LDAP3.php
@@ -39,7 +39,7 @@ require_once __DIR__ . '/LDAP3/Result.php';
  *
  * @package Net_LDAP3
  */
-class Net_LDAP3
+class Net_LDAP3 implements Serializable
 {
 
     const CONTROL_EFFECTIVE_RIGHTS = '1.3.6.1.4.1.42.2.27.9.5.2';