diff --git a/app/model/Deduction.php b/app/model/Deduction.php
index 8da4754..babf6e7 100644
--- a/app/model/Deduction.php
+++ b/app/model/Deduction.php
@@ -21,6 +21,6 @@ class Deduction extends Base
     }
     public function bill()
     {
-        return $this->hasOne(Bill::class,"id","bill_id");
+        return $this->hasOne(CouponBill::class,"id","bill_id");
     }
 }
\ No newline at end of file