diff --git a/src/opnsense/mvc/app/controllers/OPNsense/Base/ApiControllerBase.php b/src/opnsense/mvc/app/controllers/OPNsense/Base/ApiControllerBase.php
index 42729c609..622512fb0 100644
--- a/src/opnsense/mvc/app/controllers/OPNsense/Base/ApiControllerBase.php
+++ b/src/opnsense/mvc/app/controllers/OPNsense/Base/ApiControllerBase.php
@@ -180,7 +180,7 @@ class ApiControllerBase extends ControllerRoot
         foreach ($headers as $header) {
             header($header);
         }
-
+        ob_end_flush();
         fpassthru($response);
     }