diff --git a/core/lib/Drupal/Core/Installer/InstallerKernel.php b/core/lib/Drupal/Core/Installer/InstallerKernel.php
index 40e76ce..c975715 100644
--- a/core/lib/Drupal/Core/Installer/InstallerKernel.php
+++ b/core/lib/Drupal/Core/Installer/InstallerKernel.php
@@ -36,6 +36,9 @@ public function resetConfigStorage() {
   /**
    * Returns the active configuration storage used during early install.
    *
+   * This override changes the visibility so that the installer can access
+   * config storage before the container is properly built.
+   *
    * @return \Drupal\Core\Config\StorageInterface
    *   The config storage.
    */
diff --git a/core/modules/system/src/Tests/Installer/InstallerExistingConfigDirectoryTest.php b/core/modules/system/src/Tests/Installer/InstallerExistingConfigDirectoryTest.php
index d83fadf..38174f5 100644
--- a/core/modules/system/src/Tests/Installer/InstallerExistingConfigDirectoryTest.php
+++ b/core/modules/system/src/Tests/Installer/InstallerExistingConfigDirectoryTest.php
@@ -5,8 +5,7 @@
 use Drupal\simpletest\InstallerTestBase;
 
 /**
- * Tests the installer with an existing settings file with config_directory set
- * up.
+ * Tests the installer when a config_directory has already been set up.
  *
  * @group Installer
  */