diff --git a/playbooks/ceph-rgw-keystone-setup.yml b/playbooks/ceph-rgw-keystone-setup.yml
index a2fd2c0dc1..dc83e47406 100644
--- a/playbooks/ceph-rgw-keystone-setup.yml
+++ b/playbooks/ceph-rgw-keystone-setup.yml
@@ -20,7 +20,7 @@
     - "defaults/{{ install_method }}_install.yml"
   vars:
     ansible_python_interpreter: >-
-      {{ ((openstack_service_setup_host | default('localhost')) == 'localhost') | ternary(ansible_playbook_python, ansible_python['executable']) }}
+      {{ openstack_service_setup_host_python_interpreter | default((openstack_service_setup_host | default('localhost') == 'localhost') | ternary(ansible_playbook_python, ansible_python['executable'])) }}
   tags:
     - ceph-rgw
     - ceph-rgw-setup