diff --git a/config/config.go b/config/config.go
index d988c38..6235b8c 100644
--- a/config/config.go
+++ b/config/config.go
@@ -38,6 +38,7 @@ type Config struct {
 	StatsIP    net.IP
 
 	Secret []byte
+	AdTag  []byte
 }
 
 // URLs contains links to the proxy (tg://, t.me) and their QR codes.
@@ -89,7 +90,7 @@ func NewConfig(debug, verbose bool, // nolint: gocyclo
 	publicIPv4 net.IP, PublicIPv4Port uint16,
 	publicIPv6 net.IP, publicIPv6Port uint16,
 	statsIP net.IP, statsPort uint16,
-	secret string) (*Config, error) {
+	secret, adtag string) (*Config, error) {
 	if len(secret) != 32 {
 		return nil, errors.New("Telegram demands secret of length 32")
 	}
@@ -98,6 +99,14 @@ func NewConfig(debug, verbose bool, // nolint: gocyclo
 		return nil, errors.Annotate(err, "Cannot create config")
 	}
 
+	var adTagBytes []byte
+	if len(adtag) != 0 {
+		adTagBytes, err = hex.DecodeString(adtag)
+		if err != nil {
+			return nil, errors.Annotate(err, "Cannot create config")
+		}
+	}
+
 	if publicIPv4 == nil {
 		publicIPv4, err = getGlobalIPv4()
 		if err != nil {
@@ -138,6 +147,7 @@ func NewConfig(debug, verbose bool, // nolint: gocyclo
 		StatsIP:        statsIP,
 		StatsPort:      statsPort,
 		Secret:         secretBytes,
+		AdTag:          adTagBytes,
 	}
 
 	return conf, nil
diff --git a/main.go b/main.go
index 8154f6f..fcb2599 100644
--- a/main.go
+++ b/main.go
@@ -72,6 +72,7 @@ var (
 			Uint16()
 
 	secret = app.Arg("secret", "Secret of this proxy.").Required().String()
+	adtag  = app.Arg("adtag", "ADTag of the proxy.").String()
 )
 
 func init() {
@@ -93,7 +94,7 @@ func main() {
 		*publicIPv4, *publicIPv4Port,
 		*publicIPv6, *publicIPv6Port,
 		*statsIP, *statsPort,
-		*secret,
+		*secret, *adtag,
 	)
 	if err != nil {
 		usage(err.Error())
diff --git a/telegram/middle.go b/telegram/middle.go
index 03d70cd..91f22d5 100644
--- a/telegram/middle.go
+++ b/telegram/middle.go
@@ -19,6 +19,8 @@ import (
 
 type middleTelegram struct {
 	middleTelegramCaller
+
+	adtag []byte
 }
 
 func NewMiddleTelegram(conf *config.Config, logger *zap.SugaredLogger) Telegram {
@@ -36,6 +38,7 @@ func NewMiddleTelegram(conf *config.Config, logger *zap.SugaredLogger) Telegram
 			},
 			dialerMutex: &sync.RWMutex{},
 		},
+		adtag: conf.AdTag,
 	}
 
 	if err := tg.update(); err != nil {
@@ -70,7 +73,7 @@ func (t *middleTelegram) Init(connOpts *mtproto.ConnectionOpts, conn wrappers.Re
 		return nil, err
 	}
 
-	return nil, nil
+	return mtwrappers.NewProxyRequestRWC(secureConn, connOpts, t.adtag)
 }
 
 func (t *middleTelegram) sendRPCNonceRequest(conn io.Writer) (*rpc.RPCNonceRequest, error) {