diff --git a/htdocs/compta/resultat/clientfourn.php b/htdocs/compta/resultat/clientfourn.php
index ed4dac6c3f3..3658fdbda6b 100644
--- a/htdocs/compta/resultat/clientfourn.php
+++ b/htdocs/compta/resultat/clientfourn.php
@@ -38,6 +38,7 @@ require_once DOL_DOCUMENT_ROOT.'/user/class/user.class.php';
 require_once DOL_DOCUMENT_ROOT.'/core/lib/report.lib.php';
 require_once DOL_DOCUMENT_ROOT.'/core/lib/tax.lib.php';
 require_once DOL_DOCUMENT_ROOT.'/core/lib/date.lib.php';
+require_once DOL_DOCUMENT_ROOT.'/accountancy/class/accountingaccount.class.php';
 require_once DOL_DOCUMENT_ROOT.'/accountancy/class/accountancycategory.class.php';
 
 // Load translation files required by the page