diff --git a/aspnetcore/tutorials/signalr-typescript-webpack/sample/snippets/index2.ts b/aspnetcore/tutorials/signalr-typescript-webpack/sample/snippets/index2.ts
index 09e44c0781..0d9f532d78 100644
--- a/aspnetcore/tutorials/signalr-typescript-webpack/sample/snippets/index2.ts
+++ b/aspnetcore/tutorials/signalr-typescript-webpack/sample/snippets/index2.ts
@@ -18,7 +18,7 @@ connection.on("messageReceived", (username: string, message: string) => {
     let m = document.createElement("div");
 
     m.innerHTML =
-        `<div class="message__author">${username}</div><div>${message}</div>`;
+        `<div class="message-author">${username}</div><div>${message}</div>`;
 
     divMessages.appendChild(m);
     divMessages.scrollTop = divMessages.scrollHeight;
@@ -34,4 +34,4 @@ btnSend.addEventListener("click", send);
 
 function send() {
 }
-// </snippet_IndexTsPhase2File>
\ No newline at end of file
+// </snippet_IndexTsPhase2File>