diff --git a/scripts/content.js b/scripts/content.js
index 8241128..5445c3f 100644
--- a/scripts/content.js
+++ b/scripts/content.js
@@ -52,7 +52,7 @@ function checkNewMessages() {
     const el = messageNode.firstChild.firstChild.firstChild.firstChild;
     if (seenMessages.has(el)) continue;
     const rootNode = messageNode.parentNode.parentNode;
-    if (!rootNode.firstChild.firstChild) continue;
+    if (!rootNode?.firstChild?.firstChild) continue;
     const name = rootNode.firstChild.firstChild.innerHTML;
     newElements = true;
     seenMessages.add(el);