diff --git a/core/lib/Drupal/Core/Extension/ExtensionDiscovery.php b/core/lib/Drupal/Core/Extension/ExtensionDiscovery.php
index eda1e78..5507066 100644
--- a/core/lib/Drupal/Core/Extension/ExtensionDiscovery.php
+++ b/core/lib/Drupal/Core/Extension/ExtensionDiscovery.php
@@ -110,15 +110,11 @@ class ExtensionDiscovery {
    * @param string $root
    *   The app root.
    * @param bool $use_file_cache
-   *   (optional) Whether file cache should be used. Defaults to TRUE.
-   * @param string[]|null $profile_directories
-   *   (optional) The available profile directories. Defaults to NULL, which
-   *   will cause this object to search for profile directories based on
-   *   settings.
-   * @param string|null $site_path
-   *   (optional) The site path within the Drupal installation. Defaults to
-   *   NULL, which will cause this object to determine the site based on the
-   *   request information.
+   *   Whether file cache should be used.
+   * @param string[] $profile_directories
+   *   The available profile directories
+   * @param string $site_path
+   *   The path to the site.
    */
   public function __construct($root, $use_file_cache = TRUE, $profile_directories = NULL, $site_path = NULL) {
     $this->root = $root;