diff --git a/src/Illuminate/Mail/Mailable.php b/src/Illuminate/Mail/Mailable.php
index 1d18e5ba968..30cf75030ae 100644
--- a/src/Illuminate/Mail/Mailable.php
+++ b/src/Illuminate/Mail/Mailable.php
@@ -77,7 +77,7 @@ class Mailable implements MailableContract, Renderable
      *
      * @var string
      */
-    protected $markdown;
+    public $markdown;
 
     /**
      * The HTML to use for the message.