diff --git a/core/lib/Drupal/Core/DrupalKernel.php b/core/lib/Drupal/Core/DrupalKernel.php
index 38e7fd4..2366576 100644
--- a/core/lib/Drupal/Core/DrupalKernel.php
+++ b/core/lib/Drupal/Core/DrupalKernel.php
@@ -1564,6 +1564,7 @@ protected function getInstallProfile() {
     if (!empty($config['profile'])) {
       $install_profile = $config['profile'];
     }
+    // @todo https://www.drupal.org/node/2831065 remove the BC layer.
     else {
       // If system_update_8300() has not yet run fallback to using settings.
       $install_profile = Settings::get('install_profile');