diff --git a/modules/cart/commerce_cart.module b/modules/cart/commerce_cart.module
old mode 100644
new mode 100755
index 5bdd8d4..fa18c02
--- a/modules/cart/commerce_cart.module
+++ b/modules/cart/commerce_cart.module
@@ -2228,7 +2228,7 @@ function commerce_cart_field_formatter_settings_summary($field, $instance, $view
       t('Quantity widget: !status', array('!status' => $settings['show_quantity'] ? t('Enabled') : t('Disabled'))),
       t('Default quantity: @quantity', array('@quantity' => $settings['default_quantity'])),
       t('Combine like items: !status', array('!status' => $settings['combine'] ? t('Enabled') : t('Disabled'))),
-      t('!visibility attributes on single product forms.', array('!visibility' => $settings['show_single_product_attributes'] ? t('Showing') : t('Hiding'))),
+      t('!visibility attributes on single product forms.', array('!visibility' => (isset($settings['show_single_product_attributes']) && $settings['show_single_product_attributes']) ? t('Showing') : t('Hiding'))),
     );
 
     if (count(commerce_product_line_item_types()) > 1) {
@@ -2263,7 +2263,7 @@ function commerce_cart_field_formatter_view($entity_type, $entity, $field, $inst
       $line_item = commerce_product_line_item_new(reset($products), $settings['default_quantity'], 0, array(), $type);
       $line_item->data['context']['product_ids'] = array_keys($products);
       $line_item->data['context']['add_to_cart_combine'] = $settings['combine'];
-      $line_item->data['context']['show_single_product_attributes'] = $settings['show_single_product_attributes'];
+      $line_item->data['context']['show_single_product_attributes'] = isset($settings['show_single_product_attributes']) ? $settings['show_single_product_attributes'] ? FALSE;
 
       $result[] = array(
         '#arguments' => array(