diff --git a/src/Drupal/Commands/config/ConfigCommands.php b/src/Drupal/Commands/config/ConfigCommands.php
index 1ef962ed19..a02e7dd1bf 100644
--- a/src/Drupal/Commands/config/ConfigCommands.php
+++ b/src/Drupal/Commands/config/ConfigCommands.php
@@ -387,10 +387,10 @@ public function status($options = ['state' => 'Only in DB,Only in sync dir,Diffe
      *   1. User-provided $directory.
      *   2. Default sync directory
      *
-     * @param mixed $directory
+     * @param $directory
      *   A configuration directory. Note; can be boolean.
      */
-    public static function getDirectory(mixed $directory = null): string
+    public static function getDirectory($directory = null): string
     {
         $return = null;
         // If the user provided a directory, use it.