diff --git a/okx/websocket/WsClientFactory.py b/okx/websocket/WsClientFactory.py
index a003ac0..c016222 100644
--- a/okx/websocket/WsClientFactory.py
+++ b/okx/websocket/WsClientFactory.py
@@ -1,7 +1,7 @@
 from autobahn.twisted.websocket import WebSocketClientFactory
 from twisted.internet.protocol import ReconnectingClientFactory
 
-from WsClientProtocol import *
+from .WsClientProtocol import *
 
 
 class WsReconnectingClientFactory(ReconnectingClientFactory):