diff --git a/resources/Content/tweetdeck/fix_dm_input_box_focus.js b/resources/Content/tweetdeck/fix_dm_input_box_focus.js
index 50a972c9..e504b940 100644
--- a/resources/Content/tweetdeck/fix_dm_input_box_focus.js
+++ b/resources/Content/tweetdeck/fix_dm_input_box_focus.js
@@ -4,7 +4,7 @@ import { TD } from "../api/td.js";
 import { ensurePropertyExists } from "../api/utils.js";
 
 function focusDmInput() {
-	document.querySelector(".js-reply-tweetbox").focus();
+	document.querySelector(".js-reply-tweetbox")?.focus();
 }
 
 /**