diff --git a/components/mailer.rst b/components/mailer.rst
index 57c9f3fc9ab..c4aa5efaa14 100644
--- a/components/mailer.rst
+++ b/components/mailer.rst
@@ -66,6 +66,7 @@ it:
 Then, use the SMTP Gmail transport::
 
     use Symfony\Component\Mailer\Bridge\Google\Smtp\GmailTransport;
+    use Symfony\Component\Mailer\Mailer;
 
     $transport = new GmailTransport('user', 'pass');
     $mailer = new Mailer($transport);