diff --git a/htdocs/accountancy/bookkeeping/balance.php b/htdocs/accountancy/bookkeeping/balance.php
index 50f9e18fd80..76e2a0b8e20 100644
--- a/htdocs/accountancy/bookkeeping/balance.php
+++ b/htdocs/accountancy/bookkeeping/balance.php
@@ -28,7 +28,9 @@ require '../../main.inc.php';
 
 // Class
 require_once DOL_DOCUMENT_ROOT . '/core/lib/accounting.lib.php';
+require_once DOL_DOCUMENT_ROOT . '/core/lib/date.lib.php';
 require_once DOL_DOCUMENT_ROOT . '/accountancy/class/bookkeeping.class.php';
+require_once DOL_DOCUMENT_ROOT . '/accountancy/class/accountancyexport.class.php';
 require_once DOL_DOCUMENT_ROOT . '/core/class/html.formaccounting.class.php';
 require_once DOL_DOCUMENT_ROOT . '/core/class/html.formother.class.php';