diff --git a/Mailer.php b/Mailer.php
index 891f2b5..8a87ba2 100644
--- a/Mailer.php
+++ b/Mailer.php
@@ -19,7 +19,7 @@ use yii\mail\BaseMailer;
  * ~~~
  * 'components' => [
  *     ...
- *     'email' => [
+ *     'mail' => [
  *         'class' => 'yii\swiftmailer\Mailer',
  *         'transport' => [
  *             'class' => 'Swift_SmtpTransport',