diff --git a/app/code/Magento/Swatches/Block/Product/Renderer/Configurable.php b/app/code/Magento/Swatches/Block/Product/Renderer/Configurable.php
index fe9c7cdd07de2..0848f566f67bb 100644
--- a/app/code/Magento/Swatches/Block/Product/Renderer/Configurable.php
+++ b/app/code/Magento/Swatches/Block/Product/Renderer/Configurable.php
@@ -192,6 +192,7 @@ public function getJsonSwatchConfig()
 
     /**
      * Get number of swatches from config to show on product listing.
+     *
      * Other swatches can be shown after click button 'Show more'
      *
      * @return string
@@ -231,6 +232,8 @@ public function getProduct()
     }
 
     /**
+     * Get swatch attributes data.
+     *
      * @return array
      */
     protected function getSwatchAttributesData()
@@ -239,6 +242,8 @@ protected function getSwatchAttributesData()
     }
 
     /**
+     * Init isProductHasSwatchAttribute.
+     *
      * @deprecated 100.1.5 Method isProductHasSwatchAttribute() is used instead of this.
      *
      * @codeCoverageIgnore
@@ -367,6 +372,8 @@ protected function getVariationMedia($attributeCode, $optionId)
     }
 
     /**
+     * Get swatch product image.
+     *
      * @param Product $childProduct
      * @param string $imageType
      * @return string
@@ -387,6 +394,8 @@ protected function getSwatchProductImage(Product $childProduct, $imageType)
     }
 
     /**
+     * Check if product have image.
+     *
      * @param Product $product
      * @param string $imageType
      * @return bool
@@ -397,6 +406,8 @@ protected function isProductHasImage(Product $product, $imageType)
     }
 
     /**
+     * Get configurable options ids.
+     *
      * @param array $attributeData
      * @return array
      * @since 100.0.3
@@ -456,8 +467,8 @@ protected function getRendererTemplate()
     }
 
     /**
+     * @inheritDoc
      * @deprecated 100.1.5 Now is used _toHtml() directly
-     * @return string
      */
     protected function getHtmlOutput()
     {
@@ -465,6 +476,8 @@ protected function getHtmlOutput()
     }
 
     /**
+     * Get media callback url.
+     *
      * @return string
      */
     public function getMediaCallback()
diff --git a/app/code/Magento/Swatches/view/frontend/web/js/swatch-renderer.js b/app/code/Magento/Swatches/view/frontend/web/js/swatch-renderer.js
index fd383e00789be..ae5014f77254d 100644
--- a/app/code/Magento/Swatches/view/frontend/web/js/swatch-renderer.js
+++ b/app/code/Magento/Swatches/view/frontend/web/js/swatch-renderer.js
@@ -753,9 +753,9 @@ define([
                     $widget.options.jsonConfig.optionPrices
                 ]);
 
-            const checkAdditionalData = JSON.parse(this.options.jsonSwatchConfig[attributeId].additional_data);
+            var checkAdditionalData = JSON.parse(this.options.jsonSwatchConfig[attributeId]['additional_data']);
 
-            if (checkAdditionalData.update_product_preview_image == 1) {
+            if (1 == checkAdditionalData['update_product_preview_image']) {
                 $widget._loadMedia();
             }