diff --git a/playbooks/groups/mbs.yml b/playbooks/groups/mbs.yml
index addad1bf4b..39ec26b508 100644
--- a/playbooks/groups/mbs.yml
+++ b/playbooks/groups/mbs.yml
@@ -41,7 +41,7 @@
    - "{{ vars_path }}/{{ ansible_distribution }}.yml"
 
   roles:
-  - role: { openvpn/client, when: datacenter == 'phx2' }
+  - { role: openvpn/client, when: datacenter == 'phx2' }
 
   handlers:
   - import_tasks: "{{ handlers_path }}/restart_services.yml"