Error when commiting a feature

[aperi2007]

Hi,
using qgis 2.14 and last tinyows from master repo (downloaded 28 march 2016) I try to write a spatial feature (polygon) on a table.

But when I try to commit on qgis , it report me this error:

Errors: ERROR: 1 feature(s) not added.
Provider errors:
WFS service exception:
ERROR: column "ogc_fid" specified more than once
LINE 1: INSERT INTO "catasto"."test_tinyows" ("ogc_fid","ogc_fid","g...

The OGC_FID is the pk of the table, and seem that tinyows will add it two times to the insert query.

This is the settings of tinyows:

Regards,
Andrea.