diff --git a/service/index.ts b/service/index.ts
index 19e4542..942dba6 100644
--- a/service/index.ts
+++ b/service/index.ts
@@ -44,9 +44,9 @@ export const fetchConversations = async (limit = 100, last_id = null) => {
   return get('conversations', { params: { limit, last_id } })
 }
 
-export const fetchChatList = async (conversationId: string, limit = 20, last_id = null) => {
+export const fetchChatList = async (conversationId: string, limit = 20) => {
   return get('messages', {
-    params: { conversation_id: conversationId, limit, last_id }
+    params: { conversation_id: conversationId, limit}
   })
 }