diff --git a/roles/backup_server/molecule/default/tests/test_parameters_optional.py b/roles/backup_server/molecule/default/tests/test_parameters_optional.py
index 9eeee279aa7521d64036f679c32f792be5a4825f..33cb10498ba21f0fba7e5413c0b7b2c25322ef0a 100644
--- a/roles/backup_server/molecule/default/tests/test_parameters_optional.py
+++ b/roles/backup_server/molecule/default/tests/test_parameters_optional.py
@@ -111,7 +111,7 @@ def test_backup_client_authorized_keys(host):
         assert client1_user_authorized_keys.user == 'root'
         assert client1_user_authorized_keys.group == 'bak-client1_backup'
         assert client1_user_authorized_keys.mode == 0o640
-        assert client1_user_authorized_keys.content == open('tests/data/ssh/client1.pub', 'r').read()
+        assert client1_user_authorized_keys.content_string == open('tests/data/ssh/client1.pub', 'r').read()
 
         client2_user = host.user('bak-client2-backup')
 
@@ -120,7 +120,7 @@ def test_backup_client_authorized_keys(host):
         assert client2_user_authorized_keys.user == 'root'
         assert client2_user_authorized_keys.group == 'bak-client2-backup'
         assert client2_user_authorized_keys.mode == 0o640
-        assert client2_user_authorized_keys.content == open('tests/data/ssh/client2.pub', 'r').read()
+        assert client2_user_authorized_keys.content_string == open('tests/data/ssh/client2.pub', 'r').read()
 
 
 def test_firewall_configuration(host):
@@ -136,7 +136,7 @@ def test_firewall_configuration(host):
         assert firewall_config.user == 'root'
         assert firewall_config.group == 'root'
         assert firewall_config.mode == 0o640
-        assert 'saddr ( 10.31.127.1 10.31.127.3) @subchain "backup_in" {' in firewall_config.content
+        assert 'saddr ( 10.31.127.1 10.31.127.3) @subchain "backup_in" {' in firewall_config.content_string
 
 
 @pytest.mark.usefixtures("prepare_ssh_client_private_key_permissions")