Horizons councillors have voted to put the "h" into Manawatu-Whanganui Regional Council.
The vote was taken at the full council meeting on Tuesday, with all the councillors who voted in favour and two - Bruce Gordon and David Cotton - abstaining.
The last time the matter was voted on, in December 2015, councillors were divided and Chairman Bruce Gordon would not use his casting vote. The spelling went unchanged.
The change to add the "h" may cost $10,000, with an application to the Geographic Board to change the name of the region and the name of the council simply following that.
The motion to add the "h" was brought by new Palmerston North councillor Wiremu Te Awe Awe. He said Whanganui iwi groups wanted it, and were sick of being told how to spell their language.