diff --git a/salt/firewall/soc_firewall.yaml b/salt/firewall/soc_firewall.yaml
index d1db56a0b..0011a245e 100644
--- a/salt/firewall/soc_firewall.yaml
+++ b/salt/firewall/soc_firewall.yaml
@@ -191,6 +191,7 @@ firewall:
                 description: Portgroups to add access to the docker containers for this role.
                 advanced: True
                 multiline: True
+                forcedType: "[]string"
                 helpLink: firewall.html
             sensor:
               portgroups: *portgroupsdocker
@@ -241,6 +242,7 @@ firewall:
                 description: Portgroups to add access to the host.
                 advanced: True
                 multiline: True
+                forcedType: "[]string"
                 helpLink: firewall.html
             dockernet: 
               portgroups: *portgroupshost