diff --git a/sanic/websocket.py b/sanic/websocket.py
index 37b13f3c..bc78c76f 100644
--- a/sanic/websocket.py
+++ b/sanic/websocket.py
@@ -90,4 +90,5 @@ class WebSocketProtocol(HttpProtocol):
         )
         self.websocket.subprotocol = subprotocol
         self.websocket.connection_made(request.transport)
+        self.websocket.connection_open()
         return self.websocket