diff --git a/php-toolkit/Traits/Constants.php b/php-toolkit/Traits/Constants.php
index 5cddb66..f10021a 100644
--- a/php-toolkit/Traits/Constants.php
+++ b/php-toolkit/Traits/Constants.php
@@ -3,7 +3,7 @@
  * A collection of reusable traits classes for Nextcloud apps.
  *
  * @author    Claus-Justus Heine <himself@claus-justus-heine.de>
- * @copyright 2022 Claus-Justus Heine
+ * @copyright 2022, 2024 Claus-Justus Heine
  * @license   AGPL-3.0-or-later
  *
  * This program is free software: you can redistribute it and/or modify
@@ -39,4 +39,12 @@ class Constants
   public const HASH = 'hash';
   public const WEB_ASSET_META = self::JS . self::PATH_SEPARATOR . 'asset-meta.json';
   public const INFO_FILE = 'appinfo' . self::PATH_SEPARATOR . 'info.xml';
+
+  // The following will be moved to the ResponseTrait as soon as >= PHP 8.2 is feasible
+  public const RENDER_AS_GUEST = TemplateResponse::RENDER_AS_GUEST;
+  public const RENDER_AS_BLANK = 'blank';
+  public const RENDER_AS_BASE = TemplateResponse::RENDER_AS_BASE;
+  public const RENDER_AS_USER = TemplateResponse::RENDER_AS_USER;
+  public const RENDER_AS_ERROR = TemplateResponse::RENDER_AS_ERROR;
+  public const RENDER_AS_PUBLIC = TemplateResponse::RENDER_AS_PUBLIC;
 }
diff --git a/php-toolkit/Traits/ResponseTrait.php b/php-toolkit/Traits/ResponseTrait.php
index 7b64db5..14f3751 100644
--- a/php-toolkit/Traits/ResponseTrait.php
+++ b/php-toolkit/Traits/ResponseTrait.php
@@ -42,14 +42,16 @@
  */
 trait ResponseTrait
 {
-  protected const RENDER_AS_GUEST = TemplateResponse::RENDER_AS_GUEST;
-  protected const RENDER_AS_BLANK = 'blank';
-  protected const RENDER_AS_BASE = TemplateResponse::RENDER_AS_BASE;
-  protected const RENDER_AS_USER = TemplateResponse::RENDER_AS_USER;
-  protected const RENDER_AS_ERROR = TemplateResponse::RENDER_AS_ERROR;
-  protected const RENDER_AS_PUBLIC = TemplateResponse::RENDER_AS_PUBLIC;
+  // In order to restore PHP 8.1 compatibility do not use constants in traits ...
+  //
+  // protected const RENDER_AS_GUEST = TemplateResponse::RENDER_AS_GUEST;
+  // protected const RENDER_AS_BLANK = 'blank';
+  // protected const RENDER_AS_BASE = TemplateResponse::RENDER_AS_BASE;
+  // protected const RENDER_AS_USER = TemplateResponse::RENDER_AS_USER;
+  // protected const RENDER_AS_ERROR = TemplateResponse::RENDER_AS_ERROR;
+  // protected const RENDER_AS_PUBLIC = TemplateResponse::RENDER_AS_PUBLIC;
 
-  protected const APPNAME_PREFIX = 'app-';
+  // protected const APPNAME_PREFIX = 'app-';
 
   /** @var IL10N */
   protected IL10N $l;
@@ -87,7 +89,8 @@ protected function templateResponse(
       array_merge(
         [
           'appName' => $appName,
-          'appNameTag' => self::APPNAME_PREFIX . $appName,
+          // 'appNameTag' => self::APPNAME_PREFIX . $appName,
+          'appNameTag' => 'app-' . $appName,
           'l10n' => $l10n, // do not conflict with core template $l parameter
         ],
         $params,