diff --git a/src/kit/shell/src/shellLinux.c b/src/kit/shell/src/shellLinux.c
index a78590aab8351451585204e0540998082a54a9a7..fb9de558956795513f954119cdb404b116e1c49d 100644
--- a/src/kit/shell/src/shellLinux.c
+++ b/src/kit/shell/src/shellLinux.c
@@ -48,10 +48,10 @@ static struct argp_option options[] = {
   {"check",      'k', "CHECK",      0,                   "Check tables."},
   {"database",   'd', "DATABASE",   0,                   "Database to use when connecting to the server."},
   {"timezone",   'z', "TIMEZONE",   0,                   "Time zone of the shell, default is local."},
-  {"netrole",    'n', "NETROLE",    0,                   "Net role when network connectivity test, default is startup, options: client|server|rpc|startup|sync|speen|fqdn."},
+  {"netrole",    'n', "NETROLE",    0,                   "Net role when network connectivity test, default is startup, options: client|server|rpc|startup|sync|speed|fqdn."},
   {"pktlen",     'l', "PKTLEN",     0,                   "Packet length used for net test, default is 1000 bytes."},
   {"pktnum",     'N', "PKTNUM",     0,                   "Packet numbers used for net test, default is 100."},
-  {"pkttype",    'S', "PKTTYPE",    0,                   "Packet type used for net test, default is TCP."},
+  {"pkttype",    'S', "PKTTYPE",    0,                   "Choose packet type used for net test, default is TCP. Only speed test could be either TCP or UDP."},
   {0}};
 
 static error_t parse_opt(int key, char *arg, struct argp_state *state) {
diff --git a/src/util/src/tnettest.c b/src/util/src/tnettest.c
index 7d1076abbf1eb0c35385b769bfc6a88cfd8a21a7..2094c3d4be59c5636c6f987a790c163bd61c2227 100644
--- a/src/util/src/tnettest.c
+++ b/src/util/src/tnettest.c
@@ -568,7 +568,7 @@ static void taosNetCheckSpeed(char *host, int32_t port, int32_t pkgLen,
   int32_t compressTmp = tsCompressMsgSize;
   int32_t maxUdpSize  = tsRpcMaxUdpSize;
   int32_t forceTcp  = tsRpcForceTcp;
-  
+
   //Precheck for FQDN lgenth
   if (strlen(host) >= TSDB_FQDN_LEN) {
     uError("FQDN length is too long");
@@ -615,7 +615,7 @@ static void taosNetCheckSpeed(char *host, int32_t port, int32_t pkgLen,
     reqMsg.handle = NULL;   // rpc handle returned to app
     reqMsg.ahandle = NULL;  // app handle set by client
     tstrncpy((char*)reqMsg.pCont, "nettest speed", pkgLen);
-    
+
     rpcSendRecv(pRpcConn, &epSet, &reqMsg, &rspMsg);
 
     int code = 0;