diff --git a/core/tests/Drupal/KernelTests/KernelTestBase.php b/core/tests/Drupal/KernelTests/KernelTestBase.php
index d3d38ac..9f753bc 100644
--- a/core/tests/Drupal/KernelTests/KernelTestBase.php
+++ b/core/tests/Drupal/KernelTests/KernelTestBase.php
@@ -1191,7 +1191,7 @@ public function __get($name) {
       'kernel',
       // @see \Drupal\simpletest\TestBase::prepareEnvironment()
       'generatedTestFiles',
-      // @see ?
+      // Properties from the old KernelTestBase class that has been removed.
       'keyValueFactory',
     );
     if (in_array($name, $denied) || strpos($name, 'original') === 0) {