diff --git a/molecule/default/molecule.yml b/molecule/default/molecule.yml
index 4c05c16d5407febe1eab0bf528e26d9f1458fc47..60ea521d5bdca775a272040a6f3d273b0124ae86 100644
--- a/molecule/default/molecule.yml
+++ b/molecule/default/molecule.yml
@@ -17,6 +17,9 @@ provisioner:
   config_options:
     defaults:
       ansible_managed: Ansible managed
+      duplicate_dict_key: error
+      error_on_undefined_vars: true
+      inject_facts_as_vars: false
     # host_vars:
     #   instance:
     #     ansible_user: ansible