diff --git a/src/Model/Entity/Orders/Items/Offer.php b/src/Model/Entity/Orders/Items/Offer.php
index 9415999e6..7f086e8cc 100644
--- a/src/Model/Entity/Orders/Items/Offer.php
+++ b/src/Model/Entity/Orders/Items/Offer.php
@@ -98,4 +98,13 @@ class Offer
      * @JMS\SerializedName("properties")
      */
     public $properties;
+
+
+    /**
+     * @var float
+     *
+     * @JMS\Type("float")
+     * @JMS\SerializedName("quantity")
+     */
+    public $quantity;
 }