diff --git a/htdocs/api/class/api_documents.class.php b/htdocs/api/class/api_documents.class.php
index ab0d6da9155..e2e6f7f9f1e 100644
--- a/htdocs/api/class/api_documents.class.php
+++ b/htdocs/api/class/api_documents.class.php
@@ -505,7 +505,7 @@ class Documents extends DolibarrApi
 				throw new RestException(404, 'Invoice not found');
 			}
 
-			$upload_dir = getMultidirOutput($object) . "/facture/".get_exdir($object->id, 2, 0, 0, $object, 'invoice_supplier').dol_sanitizeFileName($object->ref);
+			$upload_dir = getMultidirOutput($object) . "/".get_exdir($object->id, 2, 0, 0, $object, 'invoice_supplier').dol_sanitizeFileName($object->ref);
 		} elseif ($modulepart == 'produit' || $modulepart == 'product' || $modulepart == 'service') {
 			require_once DOL_DOCUMENT_ROOT.'/product/class/product.class.php';