diff --git a/addons/web/static/src/js/core/ajax.js b/addons/web/static/src/js/core/ajax.js
index bc5250ab62015660df4f107a815c74d6f84ec702..cf5fe87b2ae1e80ea388fabb3dda5dd7252f8098 100644
--- a/addons/web/static/src/js/core/ajax.js
+++ b/addons/web/static/src/js/core/ajax.js
@@ -87,7 +87,8 @@ function _genericJsonRpc (fct_name, params, settings, fct) {
                     data: {
                         type: "xhr"+textStatus,
                         debug: error.responseText,
-                        objects: [error, errorThrown]
+                        objects: [error, errorThrown],
+                        arguments: [reason || textStatus]
                     },
                 };
                 reject({message: nerror, event: $.Event()});