diff --git a/tests/mpd/protocol/test_connection.py b/tests/mpd/protocol/test_connection.py
index 9c7edb4b..ae2212f6 100644
--- a/tests/mpd/protocol/test_connection.py
+++ b/tests/mpd/protocol/test_connection.py
@@ -10,7 +10,7 @@ class ConnectionHandlerTest(protocol.BaseTestCase):
     def test_close_closes_the_client_connection(self):
         with patch.object(self.session, 'close') as close_mock:
             self.send_request('close')
-            close_mock.assertEqualResponsecalled_once_with()
+            close_mock.assert_called_once_with()
         self.assertEqualResponse('OK')
 
     def test_empty_request(self):