PM backs treasurer's beloved Sharks

Prime Minister Malcolm Turnbull doesn't want to get Scott Morrison offside, so after much consideration he's cheering for the Cronulla Sharks to win the NRL grand final.

"I've reflected on it and given the importance of managing the economy and budget repair, I've decided in solidarity with the treasurer I will be backing the Sharks," Mr Turnbull told reporters in Sydney on Friday.

The Sharks, who face Melbourne Storm on Sunday, are based in Mr Morrison's southern Sydney electorate of Cook.