diff --git a/config/app.php b/config/app.php
index 01081dca..57ee5b75 100644
--- a/config/app.php
+++ b/config/app.php
@@ -54,6 +54,8 @@
 
     'url' => env('APP_URL', 'http://localhost'),
 
+    'asset_url' => env('ASSET_URL', null),
+
     /*
     |--------------------------------------------------------------------------
     | Application Timezone