The United State is withdrawing from the Paris Climate Change Agreement, Donald Trump has announced, giving an impression that a report from Massachusetts Institute of Technology (MIT) triggered his decision.

But officials of the institution said Trump badly misunderstood their research when he cited it on Thursday to justify withdrawing the U. S. from the Paris Climate Agreement.

The U. S. president giving a speech at the White House Rose Garden on Thursday, said that he had decided to pull out of the landmark climate deal, in part because it would not reduce global temperatures fast enough to have a significant impact. He said the nation will renegotiate.

“Even if the Paris Agreement were implemented in full, with total compliance from all nations, it is estimated it would only produce a two-tenths of one degree Celsius reduction in global temperature by the year 2100.

“Tiny, tiny amount,” he said.

That claim was attributed to the research conducted by MIT, according to White House documents seen by Reuters.

In April 2016, the Cambridge, Massaschusetts-based research university published a study entitled “How much of a difference will the Paris Agreement make?”

That study showed that if countries abided by their pledges in the deal, global warming would slow by between 0.6 degree and 1.1 degrees Celsius by 2100.