diff --git a/app/code/Magento/ConfigurableProduct/Model/Product/Type/Configurable.php b/app/code/Magento/ConfigurableProduct/Model/Product/Type/Configurable.php
index 20b54b82a2234..375bb0cdeb490 100644
--- a/app/code/Magento/ConfigurableProduct/Model/Product/Type/Configurable.php
+++ b/app/code/Magento/ConfigurableProduct/Model/Product/Type/Configurable.php
@@ -552,8 +552,8 @@ public function getUsedProductIds($product)
     {
         if (!$product->hasData($this->_usedProductIds)) {
             $usedProductIds = [];
-            foreach ($this->getUsedProducts($product) as $product) {
-                $usedProductIds[] = $product->getId();
+            foreach ($this->getUsedProducts($product) as $childProduct) {
+                $usedProductIds[] = $childProduct->getId();
             }
             $product->setData($this->_usedProductIds, $usedProductIds);
         }