diff --git a/app/code/Magento/Catalog/Model/Product.php b/app/code/Magento/Catalog/Model/Product.php
index b5e0a2c0f48b6..8a9233f176c61 100644
--- a/app/code/Magento/Catalog/Model/Product.php
+++ b/app/code/Magento/Catalog/Model/Product.php
@@ -972,7 +972,7 @@ public function afterSave()
     public function setQty($qty)
     {
         if ($this->getData('qty') != $qty) {
-            $this->setData('qty', (float)$qty);
+            $this->setData('qty', $qty);
             $this->reloadPriceInfo();
         }
         return $this;