diff --git a/templates/app/aspnet-core/src/MyCompanyName.MyProjectName.Blazor/wwwroot/index.html b/templates/app/aspnet-core/src/MyCompanyName.MyProjectName.Blazor/wwwroot/index.html
index 5927da17c3..84e7f6f84e 100644
--- a/templates/app/aspnet-core/src/MyCompanyName.MyProjectName.Blazor/wwwroot/index.html
+++ b/templates/app/aspnet-core/src/MyCompanyName.MyProjectName.Blazor/wwwroot/index.html
@@ -33,7 +33,11 @@
     <!--/ABP:Scripts-->
 
     <!-- <TEMPLATE-REMOVE IF-NOT='PWA'> -->
-    <script>navigator.serviceWorker.register('service-worker.js');</script>
+    <script>
+        if('serviceWorker' in navigator) {
+            navigator.serviceWorker.register('service-worker.js');
+        }
+    </script>
     <!-- </TEMPLATE-REMOVE> -->
 </body>
 </html>