diff --git a/captcha.install b/captcha.install
index b8df48a..e3dbb37 100755
--- a/captcha.install
+++ b/captcha.install
@@ -131,15 +131,5 @@ function captcha_install() {
     }
   }
 
-  // Explain to users that page caching may be disabled.
-  if ($config = \Drupal::config('system.performance')
-    ->get('cache.page.use_internal') != 0
-  ) {
-    drupal_set_message(\Drupal::translation()
-      ->translate('Note that the CAPTCHA module disables <a href="@performance_admin">page caching</a> of pages that include a CAPTCHA challenge.',
-        [
-          '@performance_admin' => Url::fromUri('internal:/admin/config/development/performance')
-            ->toString(),
-        ]), 'warning');
-  }
+
 }
diff --git a/captcha.module b/captcha.module
index fbcdaf8..0dea2b7 100755
--- a/captcha.module
+++ b/captcha.module
@@ -63,6 +63,9 @@ function captcha_help($route_name, RouteMatchInterface $route_match) {
       $output .= '<p>' . t('Users with the <em>Skip CAPTCHA</em> <a href=":perm">permission</a> won\'t be offered a challenge. Be sure to grant this permission to the trusted users (e.g. site administrators). If you want to test a protected form, be sure to do it as a user without the <em>Skip CAPTCHA</em> permission (e.g. as anonymous user).', [
         ':perm' => \Drupal::url('user.admin_permissions'),
       ]) . '</p>';
+      $output .= '<p>' . t('Note that the CAPTCHA module disables <a href=":performancesettings">page caching</a> of pages that include a CAPTCHA challenge.', [
+        ':performancesettings' => \Drupal::url('system.performance_settings'),
+      ]) . '</p>';
       return $output;
   }
 }