diff --git a/background.js b/background.js
index 82c5d06..1c797da 100644
--- a/background.js
+++ b/background.js
@@ -1,8 +1,7 @@
-
-browser.tabs.onUpdated.addListener(async (tabId, changeInfo, tab) => {
+browser.tabs.onUpdated.addListener((tabId, changeInfo, tab) => {
   if (changeInfo.status !== 'complete') {
     browser.pageAction.hide(tabId);
-    await browser.storage.local.remove(`nl_tab_${sender.tab.id}`);
+    browser.storage.local.remove(`nl_tab_${sender.tab.id}`);
     return;
   }
 }, { properties: ["status"] });
diff --git a/manifest.json b/manifest.json
index 45af339..8f32685 100644
--- a/manifest.json
+++ b/manifest.json
@@ -23,7 +23,7 @@
     {
       "matches": [ "http://*/*", "https://*/*", "file:///*" ],
       "js": ["content.js"],
-      "run_at": "document_end"
+      "run_at": "document_start"
     }
   ],
   "page_action": {