diff --git a/DnsServerCore/Dns/ZoneManagers/AuthZoneManager.cs b/DnsServerCore/Dns/ZoneManagers/AuthZoneManager.cs
index d3da9cb8..6c354373 100644
--- a/DnsServerCore/Dns/ZoneManagers/AuthZoneManager.cs
+++ b/DnsServerCore/Dns/ZoneManagers/AuthZoneManager.cs
@@ -758,7 +758,6 @@ namespace DnsServerCore.Dns.ZoneManagers
             switch (oldRecord.Type)
             {
                 case DnsResourceRecordType.CNAME:
-                case DnsResourceRecordType.ANAME:
                 case DnsResourceRecordType.PTR:
                 case DnsResourceRecordType.APP:
                     if (oldRecord.Name.Equals(newRecord.Name, StringComparison.OrdinalIgnoreCase))