diff --git a/htdocs/core/class/fileupload.class.php b/htdocs/core/class/fileupload.class.php
index 50b699d8b33..075a6d2dab0 100644
--- a/htdocs/core/class/fileupload.class.php
+++ b/htdocs/core/class/fileupload.class.php
@@ -76,6 +76,10 @@ class FileUpload
 		elseif ($element == 'order_supplier') {
 			$pathname = 'fourn'; $filename='fournisseur.commande';
 			$dir_output=$conf->fournisseur->commande->dir_output;
+		}
+		elseif ($element == 'invoice_supplier') {
+			$pathname = 'fourn'; $filename='fournisseur.facture';
+			$dir_output=$conf->fournisseur->facture->dir_output;
 		} else {
 			$dir_output=$conf->$element->dir_output;
 		}
@@ -83,11 +87,13 @@ class FileUpload
 		dol_include_once('/'.$pathname.'/class/'.$filename.'.class.php');
 
 		$classname = ucfirst($filename);
-		
+
 		if ($element == 'order_supplier') {
 			$classname = 'CommandeFournisseur';
+		} elseif ($element == 'invoice_supplier') {
+			$classname = 'FactureFournisseur';
 		}
-		
+
 		$object = new $classname($db);
 
 		$object->fetch($fk_element);