diff --git a/files/templates/chat.html b/files/templates/chat.html
index 39fab4507a..19aac19dfc 100644
--- a/files/templates/chat.html
+++ b/files/templates/chat.html
@@ -121,7 +121,8 @@
 </style>
 
 <script>
-	document.getElementById('chat-window').scrollTo(0, box.scrollHeight)
+	let box = document.getElementById('chat-window')
+	box.scrollTo(0, box.scrollHeight)
 </script>
 {% include "emoji_modal.html" %}