diff --git a/iptables/tasks/main.yml b/iptables/tasks/main.yml
index c242b0b..861764d 100644
--- a/iptables/tasks/main.yml
+++ b/iptables/tasks/main.yml
@@ -61,7 +61,7 @@
     - rules.v4
     - rules.v6
   when:
-    - ansible_distribution is 'Ubuntu'
+    - ansible_distribution == 'Ubuntu'
     - ansible_distribution_major_version >= '16'
   register: install_netfilter_rules
   tags: [ 'iptables', 'iptables_rules' ]