cmd/vad/main.go     | 9 ++++++++-
 internal/version.go | 2 +-

diff --git a/cmd/vad/main.go b/cmd/vad/main.go
index 03e62cfcb71ce395251df0608f3df596a3a60184348226a03dabe6a2923d8381..20b117091362536f9578520994f9dc623dcf1c16f214ac434e1fe92528e02aa6 100644
--- a/cmd/vad/main.go
+++ b/cmd/vad/main.go
@@ -16,6 +16,8 @@
 package main
 
 import (
+	"flag"
+	"fmt"
 	"io"
 	"os"
 	"strconv"
@@ -24,7 +26,12 @@ 	vors "go.stargrave.org/vors/internal"
 )
 
 func main() {
-	thres, err := strconv.ParseUint(os.Args[1], 10, 64)
+	flag.Parse()
+	if len(flag.Args()) != 1 {
+		fmt.Fprintf(os.Stderr, "Usage: rec | vors-vad THRES\n")
+		os.Exit(1)
+	}
+	thres, err := strconv.ParseUint(flag.Arg(0), 10, 64)
 	if err != nil {
 		panic(err)
 	}
diff --git a/internal/version.go b/internal/version.go
index bbeb34266c92b611557160a238e0cf0756b43e1bc96752cdda8d1ded75869ac3..ecc49fb709acb59da93bdaf8caf6d227ad9acf599d81a1b74a98a982337c3190 100644
--- a/internal/version.go
+++ b/internal/version.go
@@ -3,7 +3,7 @@
 import "runtime"
 
 const (
-	Version  = "2.1.0"
+	Version  = "2.2.0"
 	Warranty = `Copyright (C) 2024 Sergey Matveev
 
 This program is free software: you can redistribute it and/or modify