In this Feb. 6, 2013 file photo Serbia's tennis player Novak Djokovic, left, and his girlfriend Jelena Ristic arrive for a visit to a school for mentally challenged children in Belgrade, Serbia.  [Photo/Agencies]

BELGRADE, Serbia - Novak Djokovic says he will soon marry his fiancee and longtime girlfriend Jelena Ristic.

On Monday, the No. 2-ranked tennis player and six-time major champion told Ristic during a Serbian television talk show: "Jelena, enjoy it while you can. In a couple of months you will be changing your last name to Djokovic." Ristic was shown smiling.

The two have been together for more than eight years. Ristic has been running Djokovic's humanitarian aid organization.

Djokovic is resting up in Serbia after losing in the quarterfinals of the Australian Open.