diff --git a/m2pool-modules/m2pool-chat/src/main/resources/mapper/chat/ChatRoomMapper.xml b/m2pool-modules/m2pool-chat/src/main/resources/mapper/chat/ChatRoomMapper.xml
index 4686e1a..29cf7a9 100644
--- a/m2pool-modules/m2pool-chat/src/main/resources/mapper/chat/ChatRoomMapper.xml
+++ b/m2pool-modules/m2pool-chat/src/main/resources/mapper/chat/ChatRoomMapper.xml
@@ -32,6 +32,7 @@
         </where>
         ORDER BY
             flag DESC,
+            service_read_num DESC,
             GREATEST( last_user_send_time, last_customer_send_time ) DESC
         LIMIT 20
     </select>