May 15, 2016 10:54 AM EDT

One of Donald Trump’s top aides on Sunday said the presumptive Republican presidential candidate didn’t have to do anything differently to win the general election.

Paul Manafort, the candidate’s convention manager, told CNN’s Jake Tapper on State of the Union that Trump wasn’t pressured by Speaker Paul Ryan to act more presidential during their meeting on Thursday. “There’s no reason for Donald Trump to change,” Manafort said.

The Trump adviser also defended the real estate mogul after a report surfaced that Trump has posed as his own spokesperson in the past by using fake names. “I can’t tell who it is. He says it’s not him, I believe him,” Manafort said.

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