diff --git a/config/mail.php b/config/mail.php
index 54299aabf..ce8e061c2 100644
--- a/config/mail.php
+++ b/config/mail.php
@@ -35,6 +35,7 @@
 
     'mailers' => [
         'smtp' => [
+            'scheme' => 'smtp',
             'transport' => 'smtp',
             'host' => env('MAIL_HOST', 'smtp.mailgun.org'),
             'port' => env('MAIL_PORT', 587),