diff --git a/core/lib/Drupal/Component/Utility/Xss.php b/core/lib/Drupal/Component/Utility/Xss.php
index 5fd7c8f..3bde0d0 100644
--- a/core/lib/Drupal/Component/Utility/Xss.php
+++ b/core/lib/Drupal/Component/Utility/Xss.php
@@ -31,8 +31,8 @@ class Xss {
    *
    * This method is preferred to
    * \Drupal\Component\Utility\SafeMarkup::xssFilter() when the result is
-   * not being used directly in the rendering system. For example, when its
-   * result is being combined with other strings before rendering.
+   * not being used directly in the rendering system (for example, when its
+   * result is being combined with other strings before rendering).
    *
    * This code does four things:
    * - Removes characters and constructs that can trick browsers.
@@ -108,8 +108,8 @@ public static function filter($string, $html_tags = array('a', 'em', 'strong', '
    *
    * This method is preferred to
    * \Drupal\Component\Utility\SafeMarkup::xssFilterAdmin() when the result is
-   * not being used directly in the rendering system. For example, when its
-   * result is being combined with other strings before rendering.
+   * not being used directly in the rendering system (for example, when its
+   * result is being combined with other strings before rendering).
    *
    * Allows all tags that can be used inside an HTML body, save
    * for scripts and styles.
diff --git a/core/tests/Drupal/Tests/Component/Utility/SafeMarkupTest.php b/core/tests/Drupal/Tests/Component/Utility/SafeMarkupTest.php
index 57ef4a1..ff09bc5 100644
--- a/core/tests/Drupal/Tests/Component/Utility/SafeMarkupTest.php
+++ b/core/tests/Drupal/Tests/Component/Utility/SafeMarkupTest.php
@@ -223,7 +223,7 @@ public function testAdminXss() {
     // This will strip the <marquee> tags.
     $this->assertEquals('text', SafeMarkup::xssFilterAdmin('<marquee>text</marquee>'));
 
-    // This won't will strip the <marquee> tags and the string with html will be
+    // This won't strip the <marquee> tags and the string with html will be
     // marked as safe.
     $filtered = SafeMarkup::xssFilter('<marquee>text</marquee>', array('marquee'));
     $this->assertEquals('<marquee>text</marquee>', $filtered);
@@ -232,7 +232,7 @@ public function testAdminXss() {
     $this->assertEquals('text', SafeMarkup::xssFilterAdmin($filtered));
     $this->assertEquals('text', SafeMarkup::xssFilter($filtered));
 
-    // This won't will escape the <marquee> tags.
+    // This won't escape the <marquee> tags.
     $this->assertEquals('<marquee>text</marquee>', SafeMarkup::escape($filtered));
   }