diff --git a/deluge/ui/signalreceiver.py b/deluge/ui/signalreceiver.py
index d7fd8b6c4..aaea99071 100644
--- a/deluge/ui/signalreceiver.py
+++ b/deluge/ui/signalreceiver.py
@@ -38,7 +38,7 @@ import socket
 
 from deluge.log import LOG as log
 
-class SignalReceiver(ThreadingMixIn, SimpleXMLRPCServer.SimpleXMLRPCServer):
+class SignalReceiver(SimpleXMLRPCServer.SimpleXMLRPCServer):
 
     def __init__(self):
         log.debug("SignalReceiver init..")