diff --git a/htdocs/fourn/facture/card.php b/htdocs/fourn/facture/card.php
index 948fd389b60..984e5ec6cf4 100644
--- a/htdocs/fourn/facture/card.php
+++ b/htdocs/fourn/facture/card.php
@@ -44,6 +44,7 @@ require_once DOL_DOCUMENT_ROOT.'/core/lib/files.lib.php';
 require_once DOL_DOCUMENT_ROOT.'/core/class/doleditor.class.php';
 if (!empty($conf->product->enabled)) {
 	require_once DOL_DOCUMENT_ROOT.'/product/class/product.class.php';
+	require_once DOL_DOCUMENT_ROOT.'/core/lib/product.lib.php';
 }
 if (!empty($conf->projet->enabled)) {
 	require_once DOL_DOCUMENT_ROOT.'/projet/class/project.class.php';