diff --git a/js/profile-w3c-common.js b/js/profile-w3c-common.js
index 130f2a4e55..cf3bc09665 100644
--- a/js/profile-w3c-common.js
+++ b/js/profile-w3c-common.js
@@ -40,10 +40,15 @@ require.config({
   deps: ["deps/hyperhtml", "deps/url-search-params"],
 });
 
+const domReady = new Promise(function(resolve){
+  return document.readyState === "complete"
+    ? resolve()
+    : document.addEventListener("DOMContentLoaded", resolve);
+});
+
 define(
   [
     // order is significant
-    "deps/domReady",
     "core/base-runner",
     "core/ui",
     "core/aria",
@@ -90,12 +95,12 @@ define(
     /*Linter must be the last thing to run*/
     "w3c/linter",
   ],
-  function(domReady, runner, ui) {
+  function(runner, ui) {
     var args = Array.from(arguments).filter(function(item) {
       return item;
     });
     ui.show();
-    domReady(function() {
+    domReady.then(function() {
       runner
         .runAll(args)
         .then(document.respecIsReady)
diff --git a/karma.conf.js b/karma.conf.js
index 35265ae1cf..913de45176 100644
--- a/karma.conf.js
+++ b/karma.conf.js
@@ -78,6 +78,7 @@ module.exports = function(config) {
       "/js/deps/": "/base/js/deps/",
       "/base/deps/": "/base/js/deps/",
       "/base/deps/marked.js": "/base/js/deps/marked.js",
+      "/worker/respec-worker.js": "/base/worker/respec-worker.js"
     },
 
     // preprocess matching files before serving them to the browser