diff --git a/config/mail.php b/config/mail.php
index b3859d5eefb..a4a02fe486c 100644
--- a/config/mail.php
+++ b/config/mail.php
@@ -54,7 +54,7 @@
 
         'postmark' => [
             'transport' => 'postmark',
-            // 'message_stream_id' => null,
+            // 'message_stream_id' => env('POSTMARK_MESSAGE_STREAM_ID'),
             // 'client' => [
             //     'timeout' => 5,
             // ],