diff -r e6eb0c7c2e98 -r 10942ed172de web/form.py
--- a/web/form.py	Tue Sep 08 18:04:57 2015 +0200
+++ b/web/form.py	Tue Sep 15 16:15:03 2015 +0200
@@ -120,7 +120,7 @@
         extrakw = {}
         # search for navigation parameters and customization of existing
         # attributes; remaining stuff goes in extrakwargs
-        for key, val in kwargs.iteritems():
+        for key, val in kwargs.items():
             if key in controller.NAV_FORM_PARAMETERS:
                 hiddens.append( (key, val) )
             elif key == 'redirect_path':