diff --git a/htdocs/fourn/facture/document.php b/htdocs/fourn/facture/document.php
index c1adefbf93b..8e72fdb0c46 100644
--- a/htdocs/fourn/facture/document.php
+++ b/htdocs/fourn/facture/document.php
@@ -29,6 +29,7 @@ require_once(DOL_DOCUMENT_ROOT.'/fourn/class/fournisseur.class.php');
 require_once(DOL_DOCUMENT_ROOT.'/fourn/class/fournisseur.facture.class.php');
 require_once(DOL_DOCUMENT_ROOT.'/core/lib/fourn.lib.php');
 require_once(DOL_DOCUMENT_ROOT."/core/lib/files.lib.php");
+require_once(DOL_DOCUMENT_ROOT."/core/lib/images.lib.php");
 require_once(DOL_DOCUMENT_ROOT."/core/class/html.formfile.class.php");
 
 $langs->load('bills');