diff --git a/app/assets/javascripts/discourse/public/assets/scripts/discourse-boot.js b/app/assets/javascripts/discourse/public/assets/scripts/discourse-boot.js
index f33a20a7bdf..a1fe1ebd489 100644
--- a/app/assets/javascripts/discourse/public/assets/scripts/discourse-boot.js
+++ b/app/assets/javascripts/discourse/public/assets/scripts/discourse-boot.js
@@ -1,4 +1,7 @@
 (function () {
+  if (window.unsupportedBrowser) {
+    throw "Unsupported browser detected";
+  }
   // TODO: These are needed to load plugins because @ember has its own loader.
   // We should find a nicer way to do this.
   const EMBER_MODULES = {