diff --git a/src/hub.html b/src/hub.html
index b72fa2461f370c3dd8b95f7f90da0ff63440aefd..84fdef5aad8143b197be7d1b2d494c6ea771e44e 100644
--- a/src/hub.html
+++ b/src/hub.html
@@ -19,8 +19,8 @@
     <% } %>
 
     <script>
-        // HACK this has to run after A-Frame but before our bundle, since A-Frame blows away the local storage setting
-        if (/[&?]debug=true/.test(document.location.search) && typeof(localStorage) !== 'undefined') {
+        // HACK: this has to run after A-Frame but before our bundle, since A-Frame blows away the local storage setting
+        if (/[&?]debug=true/.test(window.location.search) && typeof localStorage !== "undefined") {
             localStorage.debug = "naf-janus-adapter:*";
         }
     </script>