diff -r 7769d0f61810 -r 8391bf718485 web/views/formrenderers.py
--- a/web/views/formrenderers.py	Fri May 02 17:41:11 2014 +0200
+++ b/web/views/formrenderers.py	Fri May 02 17:57:37 2014 +0200
@@ -1,4 +1,4 @@
-# copyright 2003-2012 LOGILAB S.A. (Paris, FRANCE), all rights reserved.
+# copyright 2003-2014 LOGILAB S.A. (Paris, FRANCE), all rights reserved.
 # contact http://www.logilab.fr/ -- mailto:contact@logilab.fr
 #
 # This file is part of CubicWeb.
@@ -142,12 +142,7 @@
         help = []
         descr = field.help
         if callable(descr):
-            if support_args(descr, 'form', 'field'):
-                descr = descr(form, field)
-            else:
-                warn("[3.10] field's help callback must now take form and field as argument (%s)"
-                     % field, DeprecationWarning)
-                descr = descr(form)
+            descr = descr(form, field)
         if descr:
             help.append('<div class="helper">%s</div>' % self._cw._(descr))
         example = field.example_format(self._cw)