diff --git a/application/controllers/TestController.php b/application/controllers/TestController.php
index 5f225bd89..f62f5afd2 100644
--- a/application/controllers/TestController.php
+++ b/application/controllers/TestController.php
@@ -164,6 +164,8 @@ class TestController extends CompatController
             ->setHeader('Content-Disposition', 'inline')
             ->sendResponse();
 
+        ob_end_flush();
+
         echo '[';
         foreach ($query as $i => $result) {
             $users = [];