diff --git a/core/tests/Drupal/Tests/Core/Test/TestSuiteBaseTest.php b/core/tests/Drupal/Tests/Core/Test/TestSuiteBaseTest.php
index 5a38c89832..25b362347b 100644
--- a/core/tests/Drupal/Tests/Core/Test/TestSuiteBaseTest.php
+++ b/core/tests/Drupal/Tests/Core/Test/TestSuiteBaseTest.php
@@ -7,7 +7,7 @@
 use PHPUnit\Framework\TestCase;
 
 /**
- * @coversDefaultClass \Drupal\TestSuites\TestSuiteBase
+ * This test covers \Drupal\TestSuites\TestSuiteBase.
  *
  * @runTestsInSeparateProcesses
  *
@@ -84,7 +84,8 @@ public function provideCoreTests() {
   /**
    * Tests for special case behavior of unit test suite namespaces in core.
    *
-   * @covers ::addTestsBySuiteNamespace
+   * Covers addTestsBySuiteNamespace(). We can't annotate this because of the
+   * special-case classloading for TestSuiteBase.
    *
    * @dataProvider provideCoreTests
    */