diff --git a/test/test_buildman.py b/test/test_buildman.py
index b58eddb45..ffcbc7071 100644
--- a/test/test_buildman.py
+++ b/test/test_buildman.py
@@ -224,7 +224,7 @@ class TestEphemeral(unittest.TestCase):
   @async_test
   def test_change_worker(self):
     # Send a signal to the callback that a worker key has been changed
-    set_result = Mock(sepc=etcd.EtcdResult)
+    set_result = Mock(spec=etcd.EtcdResult)
     set_result.action = 'set'
     set_result.key = self.mock_job_key