diff --git a/app/Endpoint/Api/Http/Controllers/UserCouponController.php b/app/Endpoint/Api/Http/Controllers/UserCouponController.php
index 72962fa5..5d7e1f95 100644
--- a/app/Endpoint/Api/Http/Controllers/UserCouponController.php
+++ b/app/Endpoint/Api/Http/Controllers/UserCouponController.php
@@ -63,7 +63,8 @@ class UserCouponController extends Controller
         ]);
         $id = $request->input('id');
         $coupon = UserCoupon::query()->onlyAvailable()->findOrFail($id);
-        $discount = $coupon->getDiscountAmount($request->input('total', 0));
+        $total = $request->input('total', 0) * 100;
+        $discount = $coupon->getDiscountAmount($total);
 
         return response()->json(['discount' => bcdiv($discount, 100, 2)]);
     }