diff --git a/config/app.php b/config/app.php
index 79240cf39cdc..8e4e58375b7a 100644
--- a/config/app.php
+++ b/config/app.php
@@ -53,7 +53,8 @@ return [
     */
 
     'url' => env('APP_URL', 'http://localhost'),
-    'mix_url' => env('APP_URL', 'http://localhost'),
+
+    'mix_url' => env('MIX_ASSET_URL', env('APP_URL', null)),
     /*
     |--------------------------------------------------------------------------
     | Application Timezone