diff --git a/ucs-4.0-0/management/univention-management-console-module-udm/umc/python/udm/tools.py b/ucs-4.0-0/management/univention-management-console-module-udm/umc/python/udm/tools.py
index 969acc7..6f43f21 100644
--- a/ucs-4.0-0/management/univention-management-console-module-udm/umc/python/udm/tools.py
+++ b/ucs-4.0-0/management/univention-management-console-module-udm/umc/python/udm/tools.py
@@ -38,6 +38,7 @@ import ldif
 import binascii
 
 import univention.admin.uldap
+import univention.uldap
 from univention.lib.i18n import Translation
 
 from univention.management.console.config import ucr
@@ -103,14 +104,13 @@ class LicenseImport(ldif.LDIFParser):
 		# 	self.mod_list.insert( 0, ( ldap.MOD_REPLACE, atr, entry[ atr ] ) )
 
 	def write(self, user_dn, passwd):
-		ldap_con = ldap.open("localhost", port=int(ucr.get('ldap/server/port', 7389)))
-		ldap_con.simple_bind_s(user_dn, passwd)
+		lo = univention.uldap.access(host=ucr['ldap/master'], port=int(ucr.get('ldap/master/port', 7389)), base=ucr['ldap/base'], binddn=user_dn, bindpw=passwd, follow_referral=True)
 		try:
-			ldap_con.add_s(self.dn, self.addlist)
+			lo.add(self.dn, self.addlist)
 		except ldap.ALREADY_EXISTS:
-			ldap_con.delete_s(self.dn)
-			ldap_con.add_s(self.dn, self.addlist)
-		ldap_con.unbind_s()
+			lo.delete(self.dn)
+			lo.add(self.dn, self.addlist)
+		lo.lo.unbind_s()
 
 # TODO: this should probably go into univention-lib
 # and hide urllib/urllib2 completely