diff --git a/src/database/migrations/2019_10_10_095050_create_quota_table.php b/src/database/migrations/2019_10_10_095050_create_quota_table.php
index aeb52094..ac7a9f9c 100644
--- a/src/database/migrations/2019_10_10_095050_create_quota_table.php
+++ b/src/database/migrations/2019_10_10_095050_create_quota_table.php
@@ -1,35 +1,35 @@
 <?php
 
 use Illuminate\Support\Facades\Schema;
 use Illuminate\Database\Schema\Blueprint;
 use Illuminate\Database\Migrations\Migration;
 
 class CreateQuotaTable extends Migration
 {
     /**
      * Run the migrations.
      *
      * @return void
      */
     public function up()
     {
         Schema::create('quotas', function (Blueprint $table) {
             $table->bigIncrements('id');
             $table->bigInteger('user_id');
-            $table->integer('value')->default(2147483648);
+            $table->unsignedInteger('value')->default(2147483648);
             $table->timestamps();
 
             $table->foreign('user_id')->references('id')->on('users')->onDelete('cascade');
         });
     }
 
     /**
      * Reverse the migrations.
      *
      * @return void
      */
     public function down()
     {
         Schema::dropIfExists('quotas');
     }
 }