diff --git a/services/chatService.js b/services/chatService.js
index b8a3af8fc05734b2a5fa2792c9c628da6349fa4d..f3c810b66ffb91c469ca67d9e4ef3b8a75c5285a 100644
--- a/services/chatService.js
+++ b/services/chatService.js
@@ -41,7 +41,7 @@ class ChatService {
         chatRoomId: room.chatRoomId,
         chatRoomName: room.chatRoomName,
         lastMessage: {
-          sender: lastMessage.sender || '�놁쓬',
+          sender: lastMessage.sender || '�뚮┝',
           message: lastMessage.message || '硫붿떆吏� �놁쓬',
           timestamp: lastMessage.timestamp || null,
         },