diff --git a/testsite/group_vars/all.yml b/testsite/group_vars/all.yml
index 5d1da81cd183639a9233fb9c1ac4d1b8a86e4fe7..2cdfa0a62e94bbf9ddf7df81b146c1695c04893c 100644
--- a/testsite/group_vars/all.yml
+++ b/testsite/group_vars/all.yml
@@ -15,14 +15,16 @@ ansible_key: "{{ lookup('file', '~/.ssh/id_rsa.pub') }}"
 os_users:
   - name: admin
     uid: 1000
-    additional_groups: sudo
+    additional_groups:
+      - sudo
     authorized_keys:
       - "{{ lookup('file', '~/.ssh/id_rsa.pub') }}"
     password: '$6$/aerscJY6aevRG$ABBCymEDtk2mHW/dklre9dMEdgZNJvVHsGLCzgjGmy61FssZ.KW7ePcO2wsMGIkHcg3mZlrA4dhYh.APq9OQu0'
   - name: johndoe
     uid: 1001
-    additional_groups: "office,developer"
-    authorized_keys: []
+    additional_groups:
+      - office
+      - developer
     password: '$6$cJnUatae7cMz23fl$O3HE2TslnEaKaTDSZnvuDDrfqILAiuMV1wOPGVnkUQFxUu3gIWZOyO7AI1OWYkqeQMVBiezpSqYNiQy6NF6bi0'
 
 os_groups: