diff --git a/core/lib/Drupal/Core/Cache/CacheFactory.php b/core/lib/Drupal/Core/Cache/CacheFactory.php
index d955018..c8eebbb 100644
--- a/core/lib/Drupal/Core/Cache/CacheFactory.php
+++ b/core/lib/Drupal/Core/Cache/CacheFactory.php
@@ -34,7 +34,10 @@ class CacheFactory implements CacheFactoryInterface, ContainerAwareInterface {
   protected $defaultBinBackends;
 
   /**
+   * Indicates if Drupal is being installed.
+   *
    * @see drupal_installation_attempted()
+   *
    * @var bool
    */
   protected $installationAttempted;