diff --git a/docs/first-steps.md b/docs/first-steps.md
index 74f1198..582e33c 100644
--- a/docs/first-steps.md
+++ b/docs/first-steps.md
@@ -87,7 +87,7 @@ $botSender = new Sender([
 try {
     $bot = new Bot([ 'token' => $apiKey ]);
     $bot
-    ->onText('|.*|s', function ($event) use ($bot) {
+    ->onText('|.*|s', function ($event) use ($bot, $botSender) {
         // .* - match any symbols (see PCRE)
         $bot->getClient()->sendMessage(
             (new \Viber\Api\Message\Text())