diff --git a/content-script.js b/content-script.js
index 60dc867..194216d 100644
--- a/content-script.js
+++ b/content-script.js
@@ -1,4 +1,5 @@
 "use strict";
+const mailboxRootSelector = "div[id^='primaryMailboxRoot']";
 
 (async function () {
 	function loadFavicon() {
@@ -74,7 +75,7 @@
 
 	function countUnreadEmails() {
 		const nodes = document
-			.querySelector("div[title='Folders']")
+			.querySelector(mailboxRootSelector)
 			?.parentElement?.nextElementSibling?.querySelectorAll(
 				"span span span.screenReaderOnly"
 			);
@@ -96,7 +97,7 @@
 		});
 	}
 
-	await waitForEl("div[title='Folders']");
+	await waitForEl(mailboxRootSelector);
 	const favicon = loadFavicon();
 	const owaIcon = await createIconElement();
 	const title = document.title;