diff --git a/PcfAnnuaire.py b/PcfAnnuaire.py
index 2d8f354..5769ff7 100644
--- a/PcfAnnuaire.py
+++ b/PcfAnnuaire.py
@@ -69,7 +69,7 @@ class PcfAnnuaire(BaseContent):
         ldapdir = aq_base(portal.acl_users.ldap)
         luf = ldapdir._getLDAPUserFolder()
         server = luf._delegate.getServers()[0]
-        ldap_conn = ldap.initialize('%(protocol)s://%(host)s' % server)
+        ldap_conn = ldap.initialize('%(protocol)s://%(host)s:%(port)s' % server)
         ldap_conn.simple_bind_s(luf._binduid, luf._bindpwd)
         return ldap_conn