diff --git a/config/database.php b/config/database.php
index dbdd2def2..97f6b7e0b 100755
--- a/config/database.php
+++ b/config/database.php
@@ -1,7 +1,5 @@
 <?php
 
-use Illuminate\Support\Str;
-
 return [
 
     /*
@@ -38,7 +36,7 @@ return [
         'sqlite' => [
             'driver' => 'sqlite',
             'database' => env('DB_DATABASE', database_path('database.sqlite')),
-            'prefix' => env('DB_PREFIX'),
+            'prefix' => env('DB_PREFIX', ''),
         ],
 
         'mysql' => [
@@ -51,7 +49,7 @@ return [
             'unix_socket' => env('DB_SOCKET', ''),
             'charset' => 'utf8mb4',
             'collation' => 'utf8mb4_unicode_ci',
-            'prefix' => env('DB_PREFIX'),
+            'prefix' => env('DB_PREFIX', ''),
             'strict' => false,
             'engine' => 'InnoDB ROW_FORMAT=DYNAMIC',
         ],