diff --git a/namesrv/src/main/java/org/apache/rocketmq/namesrv/NamesrvStartup.java b/namesrv/src/main/java/org/apache/rocketmq/namesrv/NamesrvStartup.java
index f49d2b31ff..d1c4fd3c39 100644
--- a/namesrv/src/main/java/org/apache/rocketmq/namesrv/NamesrvStartup.java
+++ b/namesrv/src/main/java/org/apache/rocketmq/namesrv/NamesrvStartup.java
@@ -49,15 +49,6 @@ public class NamesrvStartup {
 
     public static NamesrvController main0(String[] args) {
         System.setProperty(RemotingCommand.REMOTING_VERSION_KEY, Integer.toString(MQVersion.CURRENT_VERSION));
-
-        if (null == System.getProperty(NettySystemConfig.COM_ROCKETMQ_REMOTING_SOCKET_SNDBUF_SIZE)) {
-            NettySystemConfig.socketSndbufSize = 4096;
-        }
-
-        if (null == System.getProperty(NettySystemConfig.COM_ROCKETMQ_REMOTING_SOCKET_RCVBUF_SIZE)) {
-            NettySystemConfig.socketRcvbufSize = 4096;
-        }
-
         try {
             //PackageConflictDetect.detectFastjson();