diff -u b/core/modules/config/config.module b/core/modules/config/config.module
--- b/core/modules/config/config.module
+++ b/core/modules/config/config.module
@@ -21,7 +21,7 @@
       $output .= '<dt>' . t('Exporting the full configuration') . '</dt>';
       $output .= '<dd>' . t('You can create and download an archive consisting of all your site\'s configuration exported as <em>*.yml</em> files on the <a href="!url">Export</a> page.' , array('!url' => \Drupal::url('config.export_full'))) . '</dd>';
       $output .= '<dt>' . t('Importing a full configuration') . '</dt>';
-      $output .= '<dd>' . t('You can upload a full site configuration from an archive file on the <a href="!url">Import</a> page. When importing data from a different environment, the site and import files must have matching configuration values for UUID in the <em>system.site</em> configuration item. That means that your other environments should initially be set up as a clones of the target site. Migrations are not supported.', array('!url' => \Drupal::url('config.import_full'))) . '</dd>';
+      $output .= '<dd>' . t('You can upload a full site configuration from an archive file on the <a href="!url">Import</a> page. When importing data from a different environment, the site and import files must have matching configuration values for UUID in the <em>system.site</em> configuration item. That means that your other environments should initially be set up as clones of the target site. Migrations are not supported.', array('!url' => \Drupal::url('config.import_full'))) . '</dd>';
       $output .= '<dt>' . t('Synchronizing configuration'). '</dt>';
       $output .= '<dd>' . t('You can review differences between the active configuration and an imported configuration archive on the <a href="!synchronize">Synchronize</a> page to ensure that the changes are as expected, before finalizing the import. The Synchronize page also shows configuration items that would be added or removed.', array('!synchronize' => \Drupal::url('config.sync'))) . '</dd>';
       $output .= '<dt>' . t('Exporting a single configuration item') . '</dt>';