diff --git a/wp-config-sample.php b/wp-config-sample.php
index 9645bb587e..b5a20e74f5 100644
--- a/wp-config-sample.php
+++ b/wp-config-sample.php
@@ -38,6 +38,7 @@ define('DB_COLLATE', '');
  *
  * Change these to different unique phrases!
  * You can generate these using the {@link https://api.wordpress.org/secret-key/1.1/ WordPress.org secret-key service}
+ * You can change these at any point in time to invalidate all existing cookies this does mean that all users will have to login again.
  *
  * @since 2.6.0
  */