Nobel Laureate and Professor of Comparative Literature, Wole Soyinka, on Thursday made good his promise to destroy his United States residency green card and leave the country if Donald Trump was elected president.

“I have already done it, I have disengaged (from the United States). I have done what I said I would do,” he said on the sidelines of an education conference at the University of Johannesburg, South Africa.

“I had a horror of what is to come with Trump… I threw away the (green) card, and I have relocated, and I’m back to where I have always been” — meaning his homeland Nigeria.

Shortly before the just concluded US election, the 82 year-old Laureate had vowed to give up his US green card if Trump emerged victorious in the presidential race.

Justifying his decision later, he said Trump had built a mental wall in the minds of Americans and across the world during his electioneering campaign.

The prolific playwright, novelist and poet won the Nobel Prize for Literature in 1986 and has been a regular teacher at US universities including Harvard, Cornell and Yale.

AFP also reported Soyinka as stressing that he would not discourage others from applying for a green card.

“It’s useful in many ways. I wouldn’t for one single moment discourage any Nigerians or anybody from acquiring a green card… but I have had enough of it,” he said.

The implication of Soyinka’s action is that he would have to apply for an American visa like every other visitor, unlike when the green card gave him free access.

Soyinka, one of Africa’s most famous writers and rights activists, was reported to have recently completed a term as scholar-in-residence at New York University’s Institute of African American Affairs.