diff --git a/lib/public/AppFramework/Http/TemplateResponse.php b/lib/public/AppFramework/Http/TemplateResponse.php
index 9622d9696d..3885f57aaa 100644
--- a/lib/public/AppFramework/Http/TemplateResponse.php
+++ b/lib/public/AppFramework/Http/TemplateResponse.php
@@ -46,6 +46,10 @@ class TemplateResponse extends Response {
 	 * @since 20.0.0
 	 */
 	public const RENDER_AS_BLANK = '';
+	/**
+	 * @since 20.0.0
+	 */
+	public const RENDER_AS_BASE = 'base';
 	/**
 	 * @since 20.0.0
 	 */
@@ -188,6 +192,7 @@ class TemplateResponse extends Response {
 		} elseif (in_array($this->renderAs, [
 			self::RENDER_AS_GUEST,
 			self::RENDER_AS_BLANK,
+			self::RENDER_AS_BASE,
 			self::RENDER_AS_ERROR,
 			self::RENDER_AS_PUBLIC,
 			self::RENDER_AS_USER], true)) {