diff --git a/test/TestTCPCollector.py b/test/TestTCPCollector.py
index 4e3641855..de672db32 100644
--- a/test/TestTCPCollector.py
+++ b/test/TestTCPCollector.py
@@ -35,8 +35,8 @@ def test_should_work_with_synthetic_data(self, publish_mock, open_mock):
 
         self.assertEqual(len(publish_mock.call_args_list), 2)
         self.assertEqual(publish_mock.call_args_list, [
-            call('A', '0', 0),
-            call('C', '2', 0)
+            (('A', '0', 0), {}),
+            (('C', '2', 0), {})
         ])
 
     @patch.object(Collector, 'publish')