diff --git a/CCharLearn/wwwroot/index.html b/CCharLearn/wwwroot/index.html
index fc45e07..423b62c 100644
--- a/CCharLearn/wwwroot/index.html
+++ b/CCharLearn/wwwroot/index.html
@@ -31,7 +31,7 @@
     </div>
     <script src="_framework/blazor.webassembly.js"></script>
     <script src="_content/MudBlazor/MudBlazor.min.js"></script>
-    <script>navigator.serviceWorker.register('service-worker.js');</script>
+    <!--<script>navigator.serviceWorker.register('service-worker.js');</script>-->
 </body>
 
 </html>