diff --git a/app/Http/Controllers/PagesController.php b/app/Http/Controllers/PagesController.php
index 0db3a22..fd7e9c8 100644
--- a/app/Http/Controllers/PagesController.php
+++ b/app/Http/Controllers/PagesController.php
@@ -81,9 +81,7 @@ class PagesController extends Controller
     public function checkout(Request $checkout_req)
     {
         if (!$checkout_req->checkoutbiddernum) {
-            $bidders = \App\Models\Bidders::all()->sortBy(function($bidder) {
-                return (int) $bidder->bidder_assigned_number;
-            });
+            $bidders = \App\Models\Bidders::orderByRaw('CAST(bidder_assigned_number AS UNSIGNED) ASC')->get();
             return view('checkout_select_form', ['bidders' => $bidders]);
         } elseif (!$checkout_req->checkout_payment_method) {
             $checkout_bidder = $checkout_req->checkoutbiddernum;