diff --git a/htdocs/compta/index.php b/htdocs/compta/index.php
index 59a901ccdf8..ebaef08c7b5 100644
--- a/htdocs/compta/index.php
+++ b/htdocs/compta/index.php
@@ -838,7 +838,7 @@ if (! empty($conf->facture->enabled) && $user->rights->facture->lire)
 	$reshook=$hookmanager->executeHooks('printFieldListWhereCustomerUnpaid',$parameters);
 	$sql.=$hookmanager->resPrint;
 
-	$sql.= " GROUP BY f.facnumber, f.fk_statut, f.datef, f.type, f.total, f.tva, f.total_ttc, f.paye, f.tms, f.date_lim_reglement,";
+	$sql.= " GROUP BY f.rowid, f.facnumber, f.fk_statut, f.datef, f.type, f.total, f.tva, f.total_ttc, f.paye, f.tms, f.date_lim_reglement,";
 	$sql.= " s.nom, s.rowid, s.email, s.code_client, s.code_compta, cc.rowid, cc.code";
 	$sql.= " ORDER BY f.datef ASC, f.facnumber ASC";