Donald Trump mixed up his numbers on Monday, accidentally referring to the 9/11 terrorist attacks as taking place on 7/11.

This misspeak, which took place at a campaign event in Buffalo, was captured in a Vine shared by BuzzFeed's Brandon Wall:

Trump was campaigning ahead of Tuesday's New York primary about "New York values ," a term rival Ted Cruz had used derisively earlier this year.

"I was down there and I watched our police and our firemen, down on 7-11, down at the World Trade Center, right after it came down," Trump said. "And I saw the greatest people Ive ever seen in action."

(h/t The Hill )

Editors note: Donald Trump regularly incites political violence and is a serial liar , rampant xenophobe , racist , misogynist and birther who has repeatedly pledged to ban all Muslims 1.6 billion members of an entire religion from entering the U.S.