diff --git a/scripts/base/protocols/dns/main.bro b/scripts/base/protocols/dns/main.bro
index 2580b003dd..c8c56bdc00 100644
--- a/scripts/base/protocols/dns/main.bro
+++ b/scripts/base/protocols/dns/main.bro
@@ -65,11 +65,11 @@ redef capture_filters += {
 	["netbios-ns"] = "udp port 137", 
 };
 
-global dns_ports = { 53/udp, 53/tcp, 137/udp, 5353/udp, 5355/udp } &redef;
+const dns_ports = { 53/udp, 53/tcp, 137/udp, 5353/udp, 5355/udp };
 redef dpd_config += { [ANALYZER_DNS] = [$ports = dns_ports] };
 
-global dns_udp_ports = { 53/udp, 137/udp, 5353/udp, 5355/udp } &redef;
-global dns_tcp_ports = { 53/tcp } &redef;
+const dns_udp_ports = { 53/udp, 137/udp, 5353/udp, 5355/udp };
+const dns_tcp_ports = { 53/tcp };
 redef dpd_config += { [ANALYZER_DNS_UDP_BINPAC] = [$ports = dns_udp_ports] };
 redef dpd_config += { [ANALYZER_DNS_TCP_BINPAC] = [$ports = dns_tcp_ports] };
 
diff --git a/scripts/base/protocols/irc/main.bro b/scripts/base/protocols/irc/main.bro
index 731a943819..e74eea21f1 100644
--- a/scripts/base/protocols/irc/main.bro
+++ b/scripts/base/protocols/irc/main.bro
@@ -41,7 +41,7 @@ redef capture_filters += { ["irc-6668"] = "port 6668" };
 redef capture_filters += { ["irc-6669"] = "port 6669" };
 
 # DPD configuration.
-global irc_ports = { 6666/tcp, 6667/tcp, 6668/tcp, 6669/tcp } &redef;
+const irc_ports = { 6666/tcp, 6667/tcp, 6668/tcp, 6669/tcp };
 redef dpd_config += { [ANALYZER_IRC] = [$ports = irc_ports] };
 
 redef likely_server_ports += { 6666/tcp, 6667/tcp, 6668/tcp, 6669/tcp };