diff --git a/roles/nfc_kubernetes/tasks/k3s/configure.yaml b/roles/nfc_kubernetes/tasks/k3s/configure.yaml
index 5fb6a4a..1720ed1 100644
--- a/roles/nfc_kubernetes/tasks/k3s/configure.yaml
+++ b/roles/nfc_kubernetes/tasks/k3s/configure.yaml
@@ -40,7 +40,7 @@
         dest: "/etc/iptables-reloader/rules.d/iptables-kubernetes.rules"
         notify: firewall_reloader
         when: |-
-          {%- if firewall_installed -%}
+          {%- if firewall_installed | default(false) -%}
 
             {{ firewall_rules_dir_metadata.stat.exists }}