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 3c4cfe9784..40020d5115 100644
--- a/services/univention-s4-connector/modules/univention/s4connector/s4/dns.py
+++ b/services/univention-s4-connector/modules/univention/s4connector/s4/dns.py
@@ -1560,7 +1560,10 @@ def _identify_dns_con_object(s4connector, object):
 
 	if object.get('attributes'):
 		oc = object['attributes'].get('objectClass')
-		dc = object['attributes'].get('dc')
+		for attr in ('dc', 'DC'):
+			dc = object['attributes'].get(attr)
+			if dc:
+				break
 		if oc and 'dnsZone' in oc:
 			# forward or reverse zone
 			if dc and dc[0].endswith('in-addr.arpa'):