diff --git a/roles/backup/molecule/default/tests/test_parameters_mandatory.py b/roles/backup/molecule/default/tests/test_parameters_mandatory.py
index af520a4056450972ec6128c35f7e8458478e2bc8..29d9fe6f0b56257b34f51a5c539ac50187c6a16b 100644
--- a/roles/backup/molecule/default/tests/test_parameters_mandatory.py
+++ b/roles/backup/molecule/default/tests/test_parameters_mandatory.py
@@ -1,8 +1,10 @@
+import os
+
 import testinfra.utils.ansible_runner
 
 
 testinfra_hosts = testinfra.utils.ansible_runner.AnsibleRunner(
-    '.molecule/ansible_inventory.yml').get_hosts('parameters-mandatory')
+    os.environ['MOLECULE_INVENTORY_FILE']).get_hosts(['parameters-mandatory'])
 
 
 def test_backup_patterns_content(host):