@@ -69,11 +69,11 @@
 /*!
  * @class OFDNSResourceRecord OFDNSResourceRecord.h ObjFW/OFDNSResourceRecord.h
  *
  * @brief A class representing a DNS resource record.
  */
-@interface OFDNSResourceRecord: OFObject
+@interface OFDNSResourceRecord: OFObject <OFCopying>
 {
 	OFString *_name;
 	of_dns_resource_record_class_t _recordClass;
 	of_dns_resource_record_type_t _recordType;
 	uint32_t _TTL;