diff --git a/test/test_buildman.py b/test/test_buildman.py
index 77385015a..69050c170 100644
--- a/test/test_buildman.py
+++ b/test/test_buildman.py
@@ -380,7 +380,8 @@ class TestEphemeralLifecycle(EphemeralBuilderTestCase):
     self.test_executor.stop_builder.assert_called_once_with('123')
     self.assertEqual(self.test_executor.stop_builder.call_count, 1)
 
-    self.job_complete_callback.assert_called_once_with(ANY, BuildJobResult.INCOMPLETE)
+    self.job_complete_callback.assert_called_once_with(ANY, BuildJobResult.INCOMPLETE,
+                                                       'MockExecutor')
 
   @async_test
   def test_change_worker(self):