diff --git a/htdocs/compta/resultat/clientfourn.php b/htdocs/compta/resultat/clientfourn.php
index ed4dac6c3f3..a79729453b7 100644
--- a/htdocs/compta/resultat/clientfourn.php
+++ b/htdocs/compta/resultat/clientfourn.php
@@ -39,6 +39,7 @@ 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/accountancycategory.class.php';
+require_once DOL_DOCUMENT_ROOT.'/accountancy/class/accountingaccount.class.php';
 
 // Load translation files required by the page
 $langs->loadLangs(array('compta', 'bills', 'donation', 'salaries', 'accountancy', 'loan'));