diff --git a/export.php b/export.php
index 1dba658..9a8e594 100644
--- a/export.php
+++ b/export.php
@@ -22,6 +22,8 @@
  * @license   http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  */
 
+define('NO_OUTPUT_BUFFERING', true);
+
 require_once(dirname(__FILE__).'/../../config.php');
 require_once(dirname(__FILE__).'/locallib.php');
 require_once(dirname(__FILE__).'/export_form.php');