diff --git a/core/modules/simpletest/lib/Drupal/simpletest/WebTestBase.php b/core/modules/simpletest/lib/Drupal/simpletest/WebTestBase.php
index c22170b..e6463ac 100644
--- a/core/modules/simpletest/lib/Drupal/simpletest/WebTestBase.php
+++ b/core/modules/simpletest/lib/Drupal/simpletest/WebTestBase.php
@@ -2920,7 +2920,7 @@ protected function assertMailString($field_name, $string, $email_depth) {
    *   A message to display with the assertion. Do not translate
    *   messages: use format_string() to embed variables in the message text, not
    *   t().
-   *   *
+   *
    * @return
    *   TRUE on pass, FALSE on fail.
    */