diff --git a/core/modules/simpletest/lib/Drupal/simpletest/TestBase.php b/core/modules/simpletest/lib/Drupal/simpletest/TestBase.php
index aec65842df1fd1f92660930f03abdaba3ca0dd83..1e1e3926ae0d7eea2db5f085fb134b9aff7579f9 100644
--- a/core/modules/simpletest/lib/Drupal/simpletest/TestBase.php
+++ b/core/modules/simpletest/lib/Drupal/simpletest/TestBase.php
@@ -25,8 +25,8 @@
 /**
  * Base class for Drupal tests.
  *
- * Do not extend this class directly, use either
- * \Drupal\simpletest\WebTestBaseBase or \Drupal\simpletest\UnitTestBaseBase.
+ * Do not extend this class directly; use either
+ * \Drupal\simpletest\WebTestBase or \Drupal\simpletest\UnitTestBase.
  */
 abstract class TestBase {
   /**