diff --git a/kmip/tests/unit/services/server/test_server.py b/kmip/tests/unit/services/server/test_server.py
index 0384e8fc..86044f60 100644
--- a/kmip/tests/unit/services/server/test_server.py
+++ b/kmip/tests/unit/services/server/test_server.py
@@ -194,6 +194,7 @@ def test_start(self,
 
         a_mock = mock.MagicMock()
         b_mock = mock.MagicMock()
+        c_mock = mock.MagicMock()
 
         s = server.KmipServer(
             hostname='127.0.0.1',
@@ -213,6 +214,7 @@ def test_start(self,
             with mock.patch('ssl.SSLContext') as ssl_mock:
                 socket_mock.return_value = a_mock
                 ssl_mock.return_value.wrap_socket.return_value = b_mock
+                ssl_mock.return_value.load_cert_chain = c_mock
 
                 manager_mock.assert_not_called()
                 monitor_mock.assert_not_called()