diff --git a/core/lib/Drupal/Core/DrupalKernel.php b/core/lib/Drupal/Core/DrupalKernel.php
index 73022a5f54..1d949f3f31 100644
--- a/core/lib/Drupal/Core/DrupalKernel.php
+++ b/core/lib/Drupal/Core/DrupalKernel.php
@@ -1559,7 +1559,7 @@ public static function validateHostname(Request $request) {
    * @return bool
    *   TRUE if the Host header is trusted, FALSE otherwise.
    *
-   * @see https://www.drupal.org/node/1992030
+   * @see https://www.drupal.org/docs/8/install/trusted-host-settings
    * @see \Drupal\Core\Http\TrustedHostsRequestFactory
    */
   protected static function setupTrustedHosts(Request $request, $host_patterns) {
diff --git a/core/modules/system/system.install b/core/modules/system/system.install
index 6eb8c12005..6d9452a17f 100644
--- a/core/modules/system/system.install
+++ b/core/modules/system/system.install
@@ -912,7 +912,7 @@ function system_requirements($phase) {
       $requirements['trusted_host_patterns'] = [
         'title' => t('Trusted Host Settings'),
         'value' => t('Not enabled'),
-        'description' => t('The trusted_host_patterns setting is not configured in settings.php. This can lead to security vulnerabilities. It is <strong>highly recommended</strong> that you configure this. See <a href=":url">Protecting against HTTP HOST Header attacks</a> for more information.', [':url' => 'https://www.drupal.org/node/1992030']),
+        'description' => t('The trusted_host_patterns setting is not configured in settings.php. This can lead to security vulnerabilities. It is <strong>highly recommended</strong> that you configure this. See <a href=":url">Protecting against HTTP HOST Header attacks</a> for more information.', [':url' => 'https://www.drupal.org/docs/8/install/trusted-host-settings']),
         'severity' => REQUIREMENT_ERROR,
       ];
     }