diff -u b/sites/default/default.settings.php b/sites/default/default.settings.php
--- b/sites/default/default.settings.php
+++ b/sites/default/default.settings.php
@@ -229,16 +229,19 @@
  * the database rather than the file system. (This can be changed. See "Active
  * configuration settings" below).
  *
- * The default location for the "sync" and "active" directories is inside a
- * randomly-named directory in the public files path. The below setting allows
- * you to override the "sync" location. If you use files for the "active"
- * configuration, you can enhance security by putting the active configuration
- * outside your document root with CONFIG_ACTIVE_DIRECTORY.
+ * The default location for the "sync" directory is inside a randomly-named
+ * directory in the public files path. The setting below allows you to override
+ * the "sync" location. To enhance security, you can declare a path that is
+ * outside your document root.
+ * 
+ * If you use files for the "active" configuration, you can tell the
+ * Configuration system where this directory is located by adding an entry with
+ * array key CONFIG_ACTIVE_DIRECTORY.
  *
  * Example:
  * @code
  *   $config_directories = array(
- *     CONFIG_SYNC_DIRECTORY => '/another/directory/outside/webroot',
+ *     CONFIG_SYNC_DIRECTORY => '/directory/outside/webroot',
  *   );
  * @endcode
  */
@@ -581,9 +584,8 @@
  * {config} table. To use a different storage mechanism for the active
  * configuration, do the following prior to installing:
  * - Create an "active" directory and declare its path in $config_directories
- *   with the array key 'active' for the Configuration system to know about it.
- *   Explanation about the $config_directories array is available above in this
- *   file under the 'Location of the site configuration files' section.
+ *   as explained under the 'Location of the site configuration files' section
+ *   above in this file.
  * - Override the 'bootstrap_config_storage' setting here. It must be set to a
  *   callable that returns an object that implements
  *   \Drupal\Core\Config\StorageInterface.