(CNN)– Donald Trump, who has made his advocacy for New York City after the 9/11 attacks central to his candidacy, accidentally referred to it on Monday as 7/11 — the ubiquitous convenience store.

“I wrote this out, and it’s very close to my heart,” he said at the outset of his remarks on Buffalo on Monday evening. “Because I was down there and I watched our police and our firemen down at 7/11, down at the World Trade Center right after it came down. And I saw the greatest people I’ve ever seen in action.” The businessman did not correct himself.

Trump is poised to win a lion’s share of the delegates in New York’s primary on Tuesday, and he has held up the city’s response to the September 11, 2001 terrorist attacks as a defining “New York value.”

That’s the phrase used disparagingly by Ted Cruz several months ago, which Trump has tried to turn on his Republican rival.

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