diff --git a/lib/middleware.js b/lib/middleware.js
index b4189964..5314bf60 100644
--- a/lib/middleware.js
+++ b/lib/middleware.js
@@ -230,7 +230,13 @@ module.exports = function(srf, logger) {
       */
       if ('WS' === app.call_hook?.method ||
         app.call_hook?.url.startsWith('ws://') || app.call_hook?.url.startsWith('wss://')) {
-        app.requestor = new WsRequestor(logger, account_sid, app.call_hook, accountInfo.account.webhook_secret) ;
+        app.requestor = new WsRequestor(
+          logger,
+          service_provider_sid,
+          account_sid,
+          app.call_hook,
+          accountInfo.account.webhook_secret
+        ) ;
         app.notifier = app.requestor;
         app.call_hook.method = 'WS';
       }