diff --git a/netforward/cmd.go b/netforward/cmd.go
index 32d54f9..609766a 100644
--- a/netforward/cmd.go
+++ b/netforward/cmd.go
@@ -14,6 +14,7 @@ var f = new(NetForward)
 var dialTimeout, udpTimeout int64
 
 func init() {
+	CmdNetforward.Flags().IntVarP(&f.DelayToward, "delay-toward", "T", 0, "delay toward milliseconds,0 for both,1 for local,2 for remote")
 	CmdNetforward.Flags().BoolVarP(&f.StdinMode, "stdin", "s", false, "enable stdin mode")
 	CmdNetforward.Flags().IntVarP(&f.DelayMilSec, "delay", "D", 0, "delay milliseconds")
 	CmdNetforward.Flags().StringVarP(&f.LocalAddr, "local", "l", "0.0.0.0", "bind address")