diff --git a/Modules/Purchase/Entities/PurchaseDetail.php b/Modules/Purchase/Entities/PurchaseDetail.php
index 7189b841..bb09d1c3 100644
--- a/Modules/Purchase/Entities/PurchaseDetail.php
+++ b/Modules/Purchase/Entities/PurchaseDetail.php
@@ -15,18 +15,18 @@ class PurchaseDetail extends Model
         'purchase_id',
         'product_id',
         'product_name',
-        'quantity',
+        'qty',
         'unit_price',
         'price',
-        'sub_total',
+        'subtotal',
         'created_by',
         'updated_by'
     ];
 
     protected $casts = [
-        'quantity' => 'integer',
+        'qty' => 'integer',
         'price' => 'decimal:2',
-        'sub_total' => 'decimal:2'
+        'subtotal' => 'decimal:2'
     ];
 
     protected $with = ['product'];
diff --git a/Modules/Purchase/Http/Controllers/PurchaseController.php b/Modules/Purchase/Http/Controllers/PurchaseController.php
index b366b04e..825ef801 100644
--- a/Modules/Purchase/Http/Controllers/PurchaseController.php
+++ b/Modules/Purchase/Http/Controllers/PurchaseController.php
@@ -256,7 +256,7 @@ class PurchaseController extends Controller
             $cart->add([
                 'id'      => $purchase_detail->product_id,
                 'name'    => $purchase_detail->product_name,
-                'qty'     => $purchase_detail->quantity,
+                'qty'     => $purchase_detail->qty,
                 'unit_price'   => $purchase_detail->unit_price,
                 'weight'  => 1,
                 'options' => [
@@ -264,7 +264,7 @@ class PurchaseController extends Controller
                     'product_discount_type' => $purchase_detail->product_discount_type,
                     'subtotal'   => $purchase_detail->subtotal,
                     'code'        => $purchase_detail->product_code,
-                    'stock'       => Product::findOrFail($purchase_detail->product_id)->product_quantity,
+                    'stock'       => Product::findOrFail($purchase_detail->product_id)->product_qty,
                     'product_tax' => $purchase_detail->product_tax_amount,
                     'unit_price'  => $purchase_detail->unit_price
                 ]
@@ -290,7 +290,7 @@ class PurchaseController extends Controller
                 if ($purchase->status == 'Completed') {
                     $product = Product::findOrFail($purchase_detail->product_id);
                     $product->update([
-                        'product_quantity' => $product->product_quantity - $purchase_detail->qty
+                        'product_qty' => $product->product_qty - $purchase_detail->qty
                     ]);
                 }
                 $purchase_detail->delete();
@@ -328,7 +328,7 @@ class PurchaseController extends Controller
                 if ($request->status == 'Completed') {
                     $product = Product::findOrFail($cart_item->id);
                     $product->update([
-                        'product_quantity' => $product->product_quantity + $cart_item->qty
+                        'product_qty' => $product->product_qty + $cart_item->qty
                     ]);
                 }
             }