--- a/web/data/cubicweb.ajax.js	Tue Dec 11 18:20:00 2012 +0100
+++ b/web/data/cubicweb.ajax.js	Wed Sep 19 17:16:04 2012 +0200
@@ -70,7 +70,7 @@
                 callback.apply(null, args);
             }
         } catch(error) {
-            this.error(this.xhr, null, error);
+            this.error(this._req, null, error);
         }
     },