diff --git a/defaults/main.yml b/defaults/main.yml
index 1722d6e2..81171caf 100644
--- a/defaults/main.yml
+++ b/defaults/main.yml
@@ -180,6 +180,7 @@ tempest_service_available_horizon: "{{ groups['horizon_all'] is defined and grou
 tempest_service_available_ironic: "{{ groups['ironic_all'] is defined and groups['ironic_all'] | length > 0 }}"
 tempest_service_available_magnum: "{{ groups['magnum_all'] is defined and groups['magnum_all'] | length > 0 }}"
 tempest_service_available_manila: "{{ groups['manila_all'] is defined and groups['manila_all'] | length > 0 }}"
+tempest_service_available_mistral: "{{ groups['mistral_all'] is defined and groups['mistral_all'] | length > 0 }}"
 tempest_service_available_neutron: "{{ groups['neutron_all'] is defined and groups['neutron_all'] | length > 0 }}"
 tempest_service_available_neutron_bgpvpn: "{{ (groups['neutron_all'] is defined) and (groups['neutron_all'] | length > 0) and ('bgpvpn' in neutron_plugin_base | default([])) }}"
 tempest_service_available_neutron_fwaas: "{{ (groups['neutron_all'] is defined) and (groups['neutron_all'] | length > 0) and (('firewall' in neutron_plugin_base | default([])) or ('firewall_v2' in neutron_plugin_base | default([]))) }}"
diff --git a/vars/redhat-7.yml b/vars/redhat-7.yml
index 9e7e34a1..4e64af3d 100644
--- a/vars/redhat-7.yml
+++ b/vars/redhat-7.yml
@@ -37,6 +37,7 @@ tempest_plugin_distro_packages:
   - python-keystone-tests-tempest
   - "{{ (tempest_service_available_magnum | bool) | ternary('python-magnum-tests-tempest', '') }}"
   - "{{ (tempest_service_available_manila | bool) | ternary('python-manila-tests-tempest', '') }}"
+  - "{{ (tempest_service_available_mistral | bool) | ternary('python-mistral-tests-tempest', '') }}"
   - "{{ (tempest_service_available_neutron | bool) | ternary('python-neutron-tests-tempest', '') }}"
   - "{{ (tempest_service_available_neutron_fwaas | bool) | ternary('python-networking-fwaas-tests', '') }}"
   - "{{ (tempest_service_available_neutron_vpnaas | bool) | ternary('python-networking-vpnaas-tests', '') }}"