diff --git a/bin/tests/system/rpz/dnsrps.c b/bin/tests/system/rpz/dnsrps.c
index 6e26106032..373c19fe9b 100644
--- a/bin/tests/system/rpz/dnsrps.c
+++ b/bin/tests/system/rpz/dnsrps.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2017  Internet Systems Consortium, Inc. ("ISC")
+ * Copyright (C) 2017, 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
@@ -125,7 +125,7 @@ main(int argc, char **argv) {
 			}
 			librpz->rsp_detach(&rsp);
 			librpz->client_detach(&client);
-			printf("%d\n", serial);
+			printf("%u\n", serial);
 			return (0);
 #else
 			INSIST(0);
diff --git a/util/copyrights b/util/copyrights
index 15deab8ae9..960a688436 100644
--- a/util/copyrights
+++ b/util/copyrights
@@ -1994,7 +1994,7 @@
 ./bin/tests/system/rpz/Makefile.in		MAKE	2017
 ./bin/tests/system/rpz/ckdnsrps.sh		SH	2017
 ./bin/tests/system/rpz/clean.sh			SH	2011,2012,2013,2014,2016,2017
-./bin/tests/system/rpz/dnsrps.c			C	2017
+./bin/tests/system/rpz/dnsrps.c			C	2017,2018
 ./bin/tests/system/rpz/dnsrpzd-license.conf	X	2017
 ./bin/tests/system/rpz/dnsrpzd.conf		CONF-C	2017
 ./bin/tests/system/rpz/ns1/named.conf		CONF-C	2011,2013,2016,2017