diff --git a/app/Http/Controllers/SalesController.php b/app/Http/Controllers/SalesController.php
index 4538532..435fa0d 100644
--- a/app/Http/Controllers/SalesController.php
+++ b/app/Http/Controllers/SalesController.php
@@ -82,7 +82,10 @@ class SalesController extends Controller
      */
     public function destroy(int $id)
     {
-        Sales::findOrFail($id)->delete();
+        $sales = Sales::findOrFail($id);
+        $sales->transaksi()->map(function($transaksi) {
+            $transaksi->update('id_sales', null);
+        });
         return response()->json([
             'message' => 'Sales berhasil dihapus'
         ], 200);