The extra $1 million payout to Teina Pora could open the door to other claimants asking for their compensation payments to be adjusted for inflation, National's justice spokeswoman Amy Adams says.
Last week Justice Minister Andrew Little announced a payment of an extra $988,099 for Pora, who was wrongfully convicted for murder and spent 20 years in prison.
Pora was originally given $2.52 million and a Government apology, but Little said the payment neglected inflation over that period. The increase brings the total compensation package to $3,509,048.42, plus an extra $45,000 to cover the cost of his judicial review.
Little said at the time that he was not concerned that it would set a precedent for other claims to be inflation-adjusted.
But this morning Adams said that when she was Justice Minister, she was told that an inflation-adjusted payment could open the door to further legal challenges.