diff --git a/src/Skobkin/Bundle/PointToolsBundle/Service/Telegram/SimpleSender.php b/src/Skobkin/Bundle/PointToolsBundle/Service/Telegram/SimpleSender.php
index da62a35..31cfad7 100644
--- a/src/Skobkin/Bundle/PointToolsBundle/Service/Telegram/SimpleSender.php
+++ b/src/Skobkin/Bundle/PointToolsBundle/Service/Telegram/SimpleSender.php
@@ -35,7 +35,7 @@ class SimpleSender
     public function sendMessage(int $chatId, string $text): bool
     {
         $sendMessage = new SendMessage();
-        $sendMessage->chat_id = $chatId;
+        $sendMessage->chat_id = (string) $chatId;
         $sendMessage->text = $text;
 
         try {