diff -r 962324edd6de -r bc7c3b0f439b wsgi/request.py
--- a/wsgi/request.py	Thu Oct 02 16:34:38 2014 +0200
+++ b/wsgi/request.py	Thu Oct 02 17:18:29 2014 +0200
@@ -162,13 +162,5 @@
                 val = self.no_script_form_param(param, val)
             if param == '_cwmsgid':
                 self.set_message_id(val)
-            elif param == '__message':
-                warn('[3.13] __message in request parameter is deprecated (may '
-                     'only be given to .build_url). Seeing this message usualy '
-                     'means your application hold some <form> where you should '
-                     'replace use of __message hidden input by form.set_message, '
-                     'so new _cwmsgid mechanism is properly used',
-                     DeprecationWarning)
-                self.set_message(val)
             else:
                 self.form[param] = val