diff --git a/packages/devtools_app/web/index.html b/packages/devtools_app/web/index.html
index 0475cb306ac..932cbbf1dc6 100644
--- a/packages/devtools_app/web/index.html
+++ b/packages/devtools_app/web/index.html
@@ -107,6 +107,7 @@
       window.addEventListener('load', function(ev) {
         // Download main.dart.js
         _flutter.loader.loadEntrypoint({
+          entrypointUrl: 'main.dart.js',
           onEntrypointLoaded: function(engineInitializer) {
             engineInitializer.initializeEngine({
               renderer: 'canvaskit',