diff --git a/lib/dns/byaddr.c b/lib/dns/byaddr.c
index b849412eb0..e9ede7aed2 100644
--- a/lib/dns/byaddr.c
+++ b/lib/dns/byaddr.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2004, 2005, 2007, 2009, 2013, 2017  Internet Systems Consortium, Inc. ("ISC")
+ * Copyright (C) 2004, 2005, 2007, 2009, 2013, 2017, 2018  Internet Systems Consortium, Inc. ("ISC")
  * Copyright (C) 2000-2003  Internet Software Consortium.
  *
  * Permission to use, copy, modify, and/or distribute this software for any
@@ -84,10 +84,10 @@ dns_byaddr_createptrname2(isc_netaddr_t *address, unsigned int options,
 	if (address->family == AF_INET) {
 		(void)snprintf(textname, sizeof(textname),
 			       "%u.%u.%u.%u.in-addr.arpa.",
-			       (bytes[3] & 0xff),
-			       (bytes[2] & 0xff),
-			       (bytes[1] & 0xff),
-			       (bytes[0] & 0xff));
+			       (bytes[3] & 0xffU),
+			       (bytes[2] & 0xffU),
+			       (bytes[1] & 0xffU),
+			       (bytes[0] & 0xffU));
 	} else if (address->family == AF_INET6) {
 		size_t remaining;
 
diff --git a/util/copyrights b/util/copyrights
index 8dbf7f63a1..2764e8b062 100644
--- a/util/copyrights
+++ b/util/copyrights
@@ -2770,7 +2770,7 @@
 ./lib/dns/acl.c					C	1999,2000,2001,2002,2004,2005,2006,2007,2008,2009,2011,2013,2014,2016
 ./lib/dns/adb.c					C	1999,2000,2001,2002,2003,2004,2005,2006,2007,2008,2009,2010,2011,2012,2013,2014,2015,2016,2017,2018
 ./lib/dns/api					X	1999,2000,2001,2006,2008,2009,2010,2011,2012,2013,2014,2015,2016,2017,2018
-./lib/dns/byaddr.c				C	2000,2001,2002,2003,2004,2005,2007,2009,2013,2017
+./lib/dns/byaddr.c				C	2000,2001,2002,2003,2004,2005,2007,2009,2013,2017,2018
 ./lib/dns/cache.c				C	1999,2000,2001,2002,2003,2004,2005,2006,2007,2008,2009,2011,2013,2015,2016
 ./lib/dns/callbacks.c				C	1999,2000,2001,2004,2005,2007,2011,2015
 ./lib/dns/client.c				C	2009,2010,2011,2012,2013,2015,2016,2017