A Māori academic says the Ministry of Foreign Affairs reducing Te Reo usage is deeply disappointing.

Stuff reports the Ministry has removed Māori from some official documents, anticipating an incoming National-led Government.

A leaked email from its chief executive discusses the decision to remove Te Reo headings from submission templates.

Rapata Wiri says the agency is trying to appease voters.

"They're trying to undo all the good work that's been put in place over the last 50 years."

An MFAT spokesperson confirms it has adjusted one template, and will consult with the incoming Minister for their preferences on receiving advice.

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