diff --git a/config/cache.php b/config/cache.php
index 3eb95d10..38680919 100644
--- a/config/cache.php
+++ b/config/cache.php
@@ -41,8 +41,8 @@
         'database' => [
             'driver' => 'database',
             'table' => env('DB_CACHE_TABLE', 'cache'),
-            'connection' => env('DB_CACHE_CONNECTION', null),
-            'lock_connection' => env('DB_CACHE_LOCK_CONNECTION', null),
+            'connection' => env('DB_CACHE_CONNECTION'),
+            'lock_connection' => env('DB_CACHE_LOCK_CONNECTION'),
         ],
 
         'file' => [