diff --git a/lib/dns/tcpmsg.c b/lib/dns/tcpmsg.c
index ec658923d0..3e30c106ae 100644
--- a/lib/dns/tcpmsg.c
+++ b/lib/dns/tcpmsg.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 1999-2001, 2004-2007, 2015, 2016  Internet Systems Consortium, Inc. ("ISC")
+ * Copyright (C) 1999-2001, 2004-2007, 2015, 2016, 2018  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
@@ -113,7 +113,7 @@ recv_message(isc_task_t *task, isc_event_t *ev_in) {
 	tcpmsg->result = ISC_R_SUCCESS;
 	isc_buffer_add(&tcpmsg->buffer, ev->n);
 
-	XDEBUG(("Received %d bytes (of %d)\n", ev->n, tcpmsg->size));
+	XDEBUG(("Received %u bytes (of %d)\n", ev->n, tcpmsg->size));
 
  send_and_free:
 	isc_task_send(tcpmsg->task, &dev);
diff --git a/util/copyrights b/util/copyrights
index 5fb7cd83b4..07f2030fc3 100644
--- a/util/copyrights
+++ b/util/copyrights
@@ -3667,7 +3667,7 @@
 ./lib/dns/ssu.c					C	2000,2001,2003,2004,2005,2006,2007,2008,2010,2011,2013,2014,2016,2017,2018
 ./lib/dns/ssu_external.c			C	2011,2012,2013,2016,2017
 ./lib/dns/stats.c				C	2000,2001,2004,2005,2007,2008,2009,2012,2016
-./lib/dns/tcpmsg.c				C	1999,2000,2001,2004,2005,2006,2007,2015,2016
+./lib/dns/tcpmsg.c				C	1999,2000,2001,2004,2005,2006,2007,2015,2016,2018
 ./lib/dns/tests/Atffile				X	2011,2017
 ./lib/dns/tests/Kdh.+002+18602.key		X	2014
 ./lib/dns/tests/Krsa.+005+29235.key		X	2016