diff --git a/tests/unit/plugins/modules/test_pfsense_openvpn_server.py b/tests/unit/plugins/modules/test_pfsense_openvpn_server.py
index f5be75aa..4c92060e 100644
--- a/tests/unit/plugins/modules/test_pfsense_openvpn_server.py
+++ b/tests/unit/plugins/modules/test_pfsense_openvpn_server.py
@@ -56,7 +56,7 @@ def setUp(self):
 
         self.mock_run_command = patch('ansible.module_utils.basic.AnsibleModule.run_command')
         self.run_command = self.mock_run_command.start()
-        self.run_command.return_value = (0, base64.b64decode(TLSKEY), '')
+        self.run_command.return_value = (0, base64.b64decode(TLSKEY.encode()).decode(), '')
 
     def tearDown(self):
         """ mocking down """