diff --git a/5-network/11-websocket/demo.view/server.js b/5-network/11-websocket/demo.view/server.js
index 111a7ce7..bff73993 100644
--- a/5-network/11-websocket/demo.view/server.js
+++ b/5-network/11-websocket/demo.view/server.js
@@ -21,6 +21,7 @@ function accept(req, res) {
 
 function onConnect(ws) {
   ws.on('message', function (message) {
+    message = message.toString();
     let name = message.match(/([\p{Alpha}\p{M}\p{Nd}\p{Pc}\p{Join_C}]+)$/gu) || "Guest";
     ws.send(`Hello from server, ${name}!`);