@@ -27,16 +27,16 @@
 /**
  * @class OFDNSResponse OFDNSResponse.h ObjFW/OFDNSResponse.h
  *
  * @brief A class storing a response from @ref OFDNSResolver.
  */
+OF_SUBCLASSING_RESTRICTED
 @interface OFDNSResponse: OFObject
 {
 	OFString *_domainName;
 	OFDNSResponseRecords _answerRecords, _authorityRecords;
 	OFDNSResponseRecords _additionalRecords;
-	OF_RESERVE_IVARS(OFDNSResponse, 4)
 }
 
 /**
  * @brief The domain name of the response.
  */