diff --git a/app/Models/Card.php b/app/Models/Card.php
index 4d0d542..cc9c37f 100644
--- a/app/Models/Card.php
+++ b/app/Models/Card.php
@@ -16,7 +16,7 @@ class Card extends Model
 
     public $timestamps = false;
 
-    protected $appends = ['subject'];
+    protected $appends = ['subject', 'subject_type'];
 
     public $fillable = [
         'body',