diff --git a/htdocs/core/class/html.form.class.php b/htdocs/core/class/html.form.class.php
index afcc2e047f6..25a794745f2 100644
--- a/htdocs/core/class/html.form.class.php
+++ b/htdocs/core/class/html.form.class.php
@@ -1951,7 +1951,7 @@ class Form
 		}
 
 		if (!empty($conf->global->PRODUIT_ATTRIBUTES_HIDECHILD)) {
-			$sql .= " LEFT JOIN llx_product_attribute_combination pac ON pac.fk_product_child = p.rowid";
+			$sql .= " LEFT JOIN ".MAIN_DB_PREFIX."product_attribute_combination pac ON pac.fk_product_child = p.rowid";
 		}
 
 		$sql.= ' WHERE p.entity IN ('.getEntity('product').')';