diff --git a/core/modules/system/src/Tests/Mail/HtmlToTextTest.php b/core/modules/system/src/Tests/Mail/HtmlToTextTest.php
index 351aabb..f26b498 100644
--- a/core/modules/system/src/Tests/Mail/HtmlToTextTest.php
+++ b/core/modules/system/src/Tests/Mail/HtmlToTextTest.php
@@ -39,8 +39,7 @@ protected function stringToHtml($text) {
   }
 
   /**
-   * Helper function for testing
-   * \Drupal\Core\Mail\MailFormatHelper::htmlToText().
+   * Helper function to test \Drupal\Core\Mail\MailFormatHelper::htmlToText().
    *
    * @param $html
    *   The source HTML string to be converted.
@@ -70,8 +69,7 @@ protected function assertHtmlToText($html, $text, $message, $allowed_tags = NULL
   }
 
   /**
-   * Test all supported tags of
-   * \Drupal\Core\Mail\MailFormatHelper::htmlToText().
+   * Test supported tags of \Drupal\Core\Mail\MailFormatHelper::htmlToText().
    */
   public function testTags() {
     global $base_path, $base_url;
@@ -166,8 +164,7 @@ public function testTags() {
   }
 
   /**
-   * Test $allowed_tags argument of
-   * \Drupal\Core\Mail\MailFormatHelper::htmlToText().
+   * Tests allowing tags in \Drupal\Core\Mail\MailFormatHelper::htmlToText().
    */
   public function testDrupalHtmlToTextArgs() {
     // The second parameter of \Drupal\Core\Mail\MailFormatHelper::htmlToText()
@@ -337,8 +334,7 @@ public function testDrupalHtmlToTextParagraphs() {
   }
 
   /**
-   * Tests that \Drupal\Core\Mail\MailFormatHelper::htmlToText() wraps before
-   * 1000 characters.
+   * Tests \Drupal\Core\Mail\MailFormatHelper::htmlToText() wrapping.
    *
    * RFC 3676 says, "The Text/Plain media type is the lowest common
    * denominator of Internet email, with lines of no more than 998 characters."