diff --git a/okx/websocket/WsPublic.py b/okx/websocket/WsPublic.py
index a3f24b6..c38e9d7 100644
--- a/okx/websocket/WsPublic.py
+++ b/okx/websocket/WsPublic.py
@@ -1,6 +1,6 @@
 from twisted.internet import reactor
 
-from WsConnectManager import WsConnectManager
+from .WsConnectManager import WsConnectManager
 
 
 class WsPublic(WsConnectManager):