diff --git a/vars/main.yml b/vars/main.yml
index ab63e890..f1eab5a1 100644
--- a/vars/main.yml
+++ b/vars/main.yml
@@ -294,8 +294,8 @@ neutron_metadata: "{% if neutron_plugin_type.split('.')[0] == 'ml2' %}True{% els
 ###
 
 # Please add the 'firewall' to the neutron_plugin_base list
-neutron_fwaas: "{{ 'firewall' in neutron_plugin_base | ternary('True', 'False') }}"
-neutron_fwaas_v2: "{{ 'firewall_v2' in neutron_plugin_base | ternary('True', 'False') }}"
+neutron_fwaas: "{{ ('firewall' in neutron_plugin_base) | ternary('True', 'False') }}"
+neutron_fwaas_v2: "{{ ('firewall_v2' in neutron_plugin_base) | ternary('True', 'False') }}"
 
 ###
 ### LBaaS Plugin Configuration