diff --git a/cpp/conf/server_config.yaml b/cpp/conf/server_config.yaml
index 95fa6156c802071e333626cc5eebcf4e766714fd..cfb7ff8cf89353efd8944137494e08673fb75903 100644
--- a/cpp/conf/server_config.yaml
+++ b/cpp/conf/server_config.yaml
@@ -1,8 +1,6 @@
 server_config:
   address: 0.0.0.0
   port: 19530
-  transfer_protocol: binary   #optional: binary, compact, json
-  server_mode: thread_pool    #optional: simple, thread_pool
   gpu_index: 0                #which gpu to be used
   mode: single                #optional: single, cluster