Maurice Williamson will meet political expenses watchdog Sir Maarten Wevers next week over a top-of-the-range smartphone he didn't declare.
The Pakuranga MP claims the $899 Samsung Galaxy S4 was a long-term loan and not a gift, which would have to be declared on the register of MPs' pecuniary interests.
Prime Minister John Key and Communications and Technology Minister Amy Adams also received phones — Key got three — but declared them.
Sir Maarten, the Registrar of Pecuniary and Other Specified Interests, said Williamson contacted him after the Herald on Sunday's story on May 11.
"He set out some matters for me and I just need to have a discussion with him about the nature of the response he gave me and we'll have a talk about the provisions of the register. I want to do that in person with him."