diff --git a/index.html b/index.html
index f25b66482..2e0574629 100644
--- a/index.html
+++ b/index.html
@@ -17,7 +17,7 @@
 <body>
 	<div id="js" />
 	<script src="https://use.fontawesome.com/1da10bbdec.js"></script>
-	<script src="https://cdn.polyfill.io/v2/polyfill.min.js?features=Intl.~locale.en,Intl.~locale.fr,IntersectionObserver"></script>
+	<script src="https://cdn.polyfill.io/v2/polyfill.min.js?features=Intl.~locale.en,Intl.~locale.fr,IntersectionObserver&unknown=polyfill"></script>
 	<script type="text/javascript" src="/dist/bundle.js"></script>
 </body>
 
