diff --git a/roles/bootstrap/molecule/default/tests/test_parameters_mandatory.py b/roles/bootstrap/molecule/default/tests/test_parameters_mandatory.py
index 5365ff7bc29bb002b57fa7291d5bf00a6ca0994d..f62b306a52a5d47d7dd3941686a30744becdc33e 100644
--- a/roles/bootstrap/molecule/default/tests/test_parameters_mandatory.py
+++ b/roles/bootstrap/molecule/default/tests/test_parameters_mandatory.py
@@ -18,7 +18,7 @@ def test_authorized_keys(host):
         authorized_keys = host.file('/home/ansible/.ssh/authorized_keys')
 
         assert authorized_keys.is_file
-        assert ssh_key in authorized_keys.content
+        assert ssh_key in authorized_keys.content_string
 
 
 def test_root_authorized_keys(host):
@@ -30,4 +30,4 @@ def test_root_authorized_keys(host):
 
         ssh_key = open(os.path.expanduser('~/.ssh/id_rsa.pub'), 'read').read().strip()
 
-        assert ssh_key not in host.file('/root/.ssh/authorized_keys').content
+        assert ssh_key not in host.file('/root/.ssh/authorized_keys').content_string