Outspoken Nationals MP George Christensen has enshrined his right to keep breaking ranks by resigning his post as chief party whip.

Mr Christensen, who holds the Queensland seat of Dawson, breaks ranks with the Coalition on an almost daily basis as he seeks to ward of a One Nation threat to his seat.

He told The Australian Financial Review that his resignation, effective from 5pm on Thursday, would enable him to keep speaking out.

"I realised my constant outspokenness was incompatible with the position in the long term," he said.

"It was my decision alone and I wasn't pushed. (Nationals Leader) Barnaby (Joyce) was going to back me in either way.

"However I did feel some of my colleagues may have been aggrieved that the enforcer of discipline was being somewhat ill-disciplined himself."

He reaffirmed he had no intention to quit the party, a move which would cost the Turnbull government its one seat majority.

Mr Joyce told Sky News he had no fears of Mr Christensen defecting.

"Life will go on, this is not a big issue," he said.

Senator Christensen confirmed again on Tuesday he would be voting for a Greens bill establish a parliamentary commission of inquiry into the banks. The Greens are now just one vote short.

The development comes amid another volatile period for the Coalition; it is being hammered in the polls, Tony Abbott is destabilising Malcolm Turnbull and now a fresh battle looms over a push by conservatives and others to dilute section 18C of the Racial Discrimination Act.

Mr Turnbull warned the party room on Tuesday that disunity is death.

He told MPs the Coalition had a duty to the Australian people and constituents to stick together. He said the election was two years away and "we'll win if we stick together".