diff --git a/workers/worker.py b/workers/worker.py
index 71b46ade8..ac30fb5cf 100644
--- a/workers/worker.py
+++ b/workers/worker.py
@@ -24,6 +24,7 @@ class Worker(object):
     self._operations = []
     self._stop = Event()
     self._terminated = Event()
+    self._raven_client = None
 
     if app.config.get('EXCEPTION_LOG_TYPE', 'FakeSentry') == 'Sentry':
       worker_name = '%s:worker-%s' % (socket.gethostname(), self.__class__.__name__)