diff --git a/main.go b/main.go
index 9d3b71f..b5596cf 100644
--- a/main.go
+++ b/main.go
@@ -16,6 +16,7 @@ import (
 
 var (
 	hostname        string
+	port            string
 	fileSrvHost     string
 	fileSrvPort     string
 	certificatePath string
@@ -23,6 +24,7 @@ var (
 
 func init() {
 	flag.StringVar(&hostname, "hostname", "", "capsule hostname")
+	flag.StringVar(&port, "port", "1965", "capsule port")
 	flag.StringVar(&certificatePath, "certificatePath", "", "capsule certificate path")
 	flag.StringVar(&fileSrvHost, "fileSrvHost", "", "file push server host")
 	flag.StringVar(&fileSrvPort, "fileSrvPort", "", "file push server port")