diff --git a/services/univention-s4-connector/modules/univention/s4connector/s4/dns.py b/services/univention-s4-connector/modules/univention/s4connector/s4/dns.py
index 380bae2604..014b588bb8 100644
--- a/services/univention-s4-connector/modules/univention/s4connector/s4/dns.py
+++ b/services/univention-s4-connector/modules/univention/s4connector/s4/dns.py
@@ -1581,7 +1581,7 @@ def _identify_dns_con_object(s4connector, object):
 
 	if object.get('attributes'):
 		oc = object['attributes'].get('objectClass')
-		dc = object['attributes'].get('dc')
+		dc = object['attributes'].get('dc') or object['attributes'].get('DC')
 		if oc and 'dnsZone' in oc:
 			# forward or reverse zone
 			if dc and dc[0].endswith('in-addr.arpa'):