--- a/cubicweb/web/views/uicfg.py	Fri Feb 22 16:47:40 2019 +0100
+++ b/cubicweb/web/views/uicfg.py	Fri Apr 13 17:28:14 2018 +0200
@@ -523,7 +523,7 @@
           afs.set_muledit_editable('CWUser', ('firstname', 'surname', 'in_group'))
         """
         for attr in attrs:
-            self.edit_as_attr(self, etype, attr, formtype='muledit')
+            self.edit_as_attr(etype, attr, formtype='muledit')
 
 
 autoform_section = AutoformSectionRelationTags(__module__=__name__)