diff --git a/services/univention-s4-connector/modules/univention/s4connector/s4/dc.py b/services/univention-s4-connector/modules/univention/s4connector/s4/dc.py
index 9489bc191c..2fe87657e9 100644
--- a/services/univention-s4-connector/modules/univention/s4connector/s4/dc.py
+++ b/services/univention-s4-connector/modules/univention/s4connector/s4/dc.py
@@ -114,7 +114,7 @@ def ucs2con(s4connector, key, object):
 					s4_time = "0"
 				ml.append((ldap.MOD_REPLACE, s4_attr, [s4_time]))
 
-		sync_integers = [('sambaPwdHistoryLength', 'pwdHistoryLength'), ('sambaMinPwdLength', 'minPwdLength'), ('univentionSamba4pwdProperties', 'pwdProperties')]
+		sync_integers = [('sambaPwdHistoryLength', 'pwdHistoryLength'), ('sambaMinPwdLength', 'minPwdLength'), ('univentionSamba4pwdProperties', 'pwdProperties'), ('sambaLockoutThreshold', 'lockoutThreshold')]
 		for (ucs_attr, s4_attr) in sync_integers:
 			ucs_val = object['attributes'].get(ucs_attr, str(0))
 			s4_val = s4base_attr.get(s4_attr, [0])[0]
@@ -155,7 +155,7 @@ def con2ucs(s4connector, key, object):
 				sambadomainnameObject[ucs_attr] = [str(s4_time), 'seconds']
 				modify = True
 
-		sync_integers = [('passwordHistory', 'pwdHistoryLength'), ('passwordLength', 'minPwdLength'), ('domainPwdProperties', 'pwdProperties')]
+		sync_integers = [('passwordHistory', 'pwdHistoryLength'), ('passwordLength', 'minPwdLength'), ('domainPwdProperties', 'pwdProperties'), ('badLockoutAttempts', 'lockoutThreshold')]
 		for (ucs_attr, s4_attr) in sync_integers:
 			ucs_val = sambadomainnameObject.get(ucs_attr, 0)
 			s4_val = object['attributes'].get(s4_attr, [None])[0]