diff --git a/args.go b/args.go
index acb6707..3f46565 100644
--- a/args.go
+++ b/args.go
@@ -8,11 +8,13 @@ import (
 
 var connectAddress string
 var serialTCPPort uint16
+var enableSerialDevice bool
 
 func parseArgs() {
 	h := getopt.BoolLong("help", 'h', "display help")
 	a := getopt.StringLong("address", 'a', "IC-705", "Connect to address")
-	t := getopt.Uint16Long("serial-tcp-port", 'p', 4532, "Expose serial port as TCP port for rigctl")
+	t := getopt.Uint16Long("serial-tcp-port", 'p', 4532, "Expose radio's serial port as TCP port for rigctl")
+	s := getopt.BoolLong("enable-serial-device", 's', "Expose radio's serial port as a virtual serial port")
 
 	getopt.Parse()
 
@@ -23,4 +25,5 @@ func parseArgs() {
 
 	connectAddress = *a
 	serialTCPPort = *t
+	enableSerialDevice = *s
 }