The Court of Appeal has rejected a bid by a convicted killer to have his minimum prison term reduced.
Pauesi Brown stabbed Austin Hemmings to death when he went to the aid of a woman being attacked in downtown Auckland in 2008.
Brown pleaded guilty in the High Court to murder and assault with a weapon and was sentenced to life in prison with a minimum term of 16 years.
Brown did not appeal against the convictions, but wanted the term reduced on the grounds that the sentence was manifestly excessive and did not give credit to his guilty plea.
However, the Court of Appeal says it was the second time Brown has killed.
He also has a series of convictions for other violent offences.
The court said Mr Hemmings was a man with much to give to his family and community.