diff --git a/src/lib/dns/rrparamregistry.cc b/src/lib/dns/rrparamregistry.cc
index a8368b7a7a..23c63829b3 100644
--- a/src/lib/dns/rrparamregistry.cc
+++ b/src/lib/dns/rrparamregistry.cc
@@ -1,16 +1,18 @@
-///////////////
-///////////////
-///////////////   THIS FILE IS AUTOMATICALLY GENERATED BY gen-rdatacode.py.
-///////////////   DO NOT EDIT!
-///////////////
-///////////////
-
 // Copyright (C) 2010-2022 Internet Systems Consortium, Inc. ("ISC")
 //
 // This Source Code Form is subject to the terms of the Mozilla Public
 // License, v. 2.0. If a copy of the MPL was not distributed with this
 // file, You can obtain one at http://mozilla.org/MPL/2.0/.
 
+///   @file rrparamregistry.cc
+///
+///   THIS FILE USED TO BE AUTOMATICALLY GENERATED BY gen-rdatacode.py.
+///   Once this library was taken over by Kea project, we do not develop
+///   the DNS capabilities anymore, as Kea focuses on DHCP, not DNS.
+///   As such, we stopped adding new RR types as those we have are
+///   sufficient. Therefore it's unlikely this file will ever be
+///   regenerated.
+
 #include <config.h>
 
 #include <cassert>