diff --git a/htdocs/product/class/product.class.php b/htdocs/product/class/product.class.php
index ca2418a0ab1..5e5198d6b4c 100644
--- a/htdocs/product/class/product.class.php
+++ b/htdocs/product/class/product.class.php
@@ -2985,7 +2985,7 @@ class Product extends CommonObject
 					$adeduire = 0;
 					$sql = "SELECT sum(fd.qty) as count FROM ".MAIN_DB_PREFIX."facturedet fd ";
 					$sql .= " JOIN ".MAIN_DB_PREFIX."facture f ON fd.fk_facture = f.rowid ";
-					$sql .= " JOIN ".MAIN_DB_PREFIX."element_element el ON el.fk_target = f.rowid and el.targettype = 'facture' and sourcetype = 'commande'";
+					$sql .= " JOIN ".MAIN_DB_PREFIX."element_element el ON ((el.fk_target = f.rowid AND el.targettype = 'facture' AND sourcetype = 'commande') OR (el.fk_source = f.rowid AND el.targettype = 'commande' AND sourcetype = 'facture'))";
 					$sql .= " JOIN ".MAIN_DB_PREFIX."commande c ON el.fk_source = c.rowid ";
 					$sql .= " WHERE c.fk_statut IN (".$this->db->sanitize($filtrestatut).") AND c.facture = 0 AND fd.fk_product = ".((int) $this->id);
 					dol_syslog(__METHOD__.":: sql $sql", LOG_NOTICE);