diff --git a/kiln-controller.py b/kiln-controller.py
index 1a061b8..8e5e5aa 100755
--- a/kiln-controller.py
+++ b/kiln-controller.py
@@ -11,6 +11,7 @@ import geventwebsocket
 #from bottle import post, get
 from gevent.pywsgi import WSGIServer
 from geventwebsocket.handler import WebSocketHandler
+from geventwebsocket import WebSocketError
 
 
 try: