diff -u b/core/modules/simpletest/src/AssertContentTrait.php b/core/modules/simpletest/src/AssertContentTrait.php
--- b/core/modules/simpletest/src/AssertContentTrait.php
+++ b/core/modules/simpletest/src/AssertContentTrait.php
@@ -392,8 +392,6 @@
    *
    * @return bool
    *   TRUE on pass, FALSE on fail.
-   *
-   * @see \Drupal\simpletest\AssertContentTrait::assertRaw()
    */
   protected function assertRaw($raw, $message = '', $group = 'Other') {
     if (!$message) {