diff --git a/bot.go b/bot.go
index 5b0a49c..5142d73 100644
--- a/bot.go
+++ b/bot.go
@@ -11,12 +11,12 @@ import (
 	"git.gensokyo.cafe/kkyy/tgbot_misaka_5882f7/stats"
 )
 
-func isFromAdmin(upd tele.Update) bool {
-	if upd.Message == nil || upd.Message.Sender == nil {
+func isFromAdmin(sender *tele.User) bool {
+	if sender == nil {
 		return false
 	}
 
-	_, ok := config.AdminUIDs[upd.Message.Sender.ID]
+	_, ok := config.AdminUIDs[sender.ID]
 	return ok
 }
 
@@ -39,8 +39,7 @@ func initBot() (*tele.Bot, error) {
 }
 
 func handleStartCmd(c tele.Context) error {
-	upd := c.Update()
-	if !isFromAdmin(upd) {
+	if !isFromAdmin(c.Sender()) {
 		return c.Send("Hello, stranger :)")
 	}
 
@@ -48,8 +47,7 @@ func handleStartCmd(c tele.Context) error {
 }
 
 func handleTrafficCmd(c tele.Context) error {
-	upd := c.Update()
-	if !isFromAdmin(upd) {
+	if !isFromAdmin(c.Sender()) {
 		return nil
 	}