diff --git a/src/components/room/message/MessageList.tsx b/src/components/room/message/MessageList.tsx
index aaaef23..478fc6e 100644
--- a/src/components/room/message/MessageList.tsx
+++ b/src/components/room/message/MessageList.tsx
@@ -200,7 +200,7 @@ export const MessageList = memo(function MessageList({
 
   const scrollToBottom = useCallback((smooth = true) => {
     if (rows.length === 0) return;
-    virtualizer.scrollToIndex(rows.length - 1, { align: 'end', smooth });
+    virtualizer.scrollToIndex(rows.length - 1, { align: 'end', behavior: smooth ? 'smooth' : 'auto' });
   }, [virtualizer, rows.length]);
 
   // Ensure scroll-to-bottom fires after virtualizer measures all rows