diff --git a/htdocs/product/card.php b/htdocs/product/card.php
index 2975aa4b19b..d65c7fe1f35 100644
--- a/htdocs/product/card.php
+++ b/htdocs/product/card.php
@@ -42,6 +42,7 @@ require_once DOL_DOCUMENT_ROOT.'/core/class/extrafields.class.php';
 require_once DOL_DOCUMENT_ROOT.'/core/class/genericobject.class.php';
 require_once DOL_DOCUMENT_ROOT.'/core/lib/product.lib.php';
 require_once DOL_DOCUMENT_ROOT.'/core/lib/company.lib.php';
+require_once DOL_DOCUMENT_ROOT.'/core/lib/accounting.lib.php';
 require_once DOL_DOCUMENT_ROOT.'/categories/class/categorie.class.php';
 if (! empty($conf->propal->enabled))     require_once DOL_DOCUMENT_ROOT.'/comm/propal/class/propal.class.php';
 if (! empty($conf->facture->enabled))    require_once DOL_DOCUMENT_ROOT.'/compta/facture/class/facture.class.php';