diff --git a/app/Classes/Modules/Bookings/ControllersLogic/DownloadBookingDocumentLogic.php b/app/Classes/Modules/Bookings/ControllersLogic/DownloadBookingDocumentLogic.php
index 01d55630..b85bb7f5 100644
--- a/app/Classes/Modules/Bookings/ControllersLogic/DownloadBookingDocumentLogic.php
+++ b/app/Classes/Modules/Bookings/ControllersLogic/DownloadBookingDocumentLogic.php
@@ -49,6 +49,9 @@ class DownloadBookingDocumentLogic
 
             $zip->close();
 
+            header('Content-Type: application/zip');
+            header('Content-disposition: attachment; filename='.$attachment);
+            header('Content-Length: ' . filesize($attachment));
             readfile($attachment);
             unlink($attachment);