diff --git a/src/include/order/class-wc-retailcrm-order-item.php b/src/include/order/class-wc-retailcrm-order-item.php
index 029b878..e98098b 100644
--- a/src/include/order/class-wc-retailcrm-order-item.php
+++ b/src/include/order/class-wc-retailcrm-order-item.php
@@ -23,7 +23,7 @@ class WC_Retailcrm_Order_Item extends WC_Retailcrm_Abstracts_Data
         'offer' => array(),
         'productName' => '',
         'initialPrice' => 0.00,
-        'quantity' => 0
+        'quantity' => 0.00
     );
 
     /**
@@ -56,7 +56,7 @@ class WC_Retailcrm_Order_Item extends WC_Retailcrm_Abstracts_Data
         $data['externalId'] = $itemId . '_' . $item->get_id();
         $data['productName'] = $item['name'];
         $data['initialPrice'] = (float)$price;
-        $data['quantity'] = $item['qty'];
+        $data['quantity'] = (double)$item['qty'];
 
         $this->set_data_fields($data);
         $this->set_offer($item);
@@ -129,7 +129,7 @@ class WC_Retailcrm_Order_Item extends WC_Retailcrm_Abstracts_Data
             'offer' => array(),
             'productName' => '',
             'initialPrice' => 0.00,
-            'quantity' => 0
+            'quantity' => 0.00
         );
     }
 }