diff --git a/app/code/Magento/Wishlist/Model/Item.php b/app/code/Magento/Wishlist/Model/Item.php
index b0e7c78cae5f4..41e83c7179e10 100644
--- a/app/code/Magento/Wishlist/Model/Item.php
+++ b/app/code/Magento/Wishlist/Model/Item.php
@@ -473,7 +473,7 @@ public function getProductUrl()
     public function getBuyRequest()
     {
         $option = $this->getOptionByCode('info_buyRequest');
-        $initialData = $option ? $this->serializer->unserialize($option->getValue()) : null;
+        $initialData = $option ? $this->serializer->unserialize($option->getValue()) : [];
 
         if ($initialData instanceof \Magento\Framework\DataObject) {
             $initialData = $initialData->getData();