diff --git a/api/src/Controller/ZZController.php b/api/src/Controller/ZZController.php
index d135e5e62..e011301c3 100644
--- a/api/src/Controller/ZZController.php
+++ b/api/src/Controller/ZZController.php
@@ -159,6 +159,8 @@ private function getAcceptType(Request $request): string
             case 'text/xml':
             case 'application/xml':
                 return 'xml';
+            case 'text/html':
+                return 'html';
         }//end switch
 
         throw new BadRequestHttpException('No proper accept could be determined');