diff --git a/src/javascript/utils/aniwatchCore.js b/src/javascript/utils/aniwatchCore.js
index f6c2103..abe5afa 100644
--- a/src/javascript/utils/aniwatchCore.js
+++ b/src/javascript/utils/aniwatchCore.js
@@ -1,3 +1,5 @@
+import * as helper from './helpers';
+
 let __scripts = [];
 let __afterLoadScripts = [];
 
@@ -16,7 +18,7 @@ export function initCore() {
         attributes: true
     });
 
-    document.addEventListener("DOMContentLoaded", event => awaitPageLoaded(), false);
+    helper.onReady(() => awaitPageLoaded());
 }
 
 export function registerScript(func, pattern = '.*') {
diff --git a/src/javascript/utils/helpers.js b/src/javascript/utils/helpers.js
index 6265b3a..a52968e 100644
--- a/src/javascript/utils/helpers.js
+++ b/src/javascript/utils/helpers.js
@@ -10,6 +10,14 @@ export function initHelpers() {
     document.addEventListener('keyup', event => handleKeyUp(event));
 }
 
+export function onReady(fn) {
+    if (document.readyState != 'loading') {
+        fn();
+    } else {
+        document.addEventListener('DOMContentLoaded', fn);
+    }
+}
+
 function handleKeyDown(event) {
     handleKeyToggle(event, true);
 }