Donald Trump said Thursday he wouldn’t let the U.S. default on its debt, saying the nation’s debt is “absolutely, 100% sacred.”

Following a speech at the Economic Club of New York, Republican presidential nominee Trump was asked if there was any scenario under which he’d consider defaulting.

Trump replied with a strong “no” — though he did say “there are scenarios where you could buy back debt,” something he has suggested in the past. Trump made similar comments on CNBC in May, during an interview in which he also said he would “make a deal” on debt. “I think depending on where interest rates are, I think you can buy back,” Trump said.

In a separate interview a few days later, Trump pushed back against critics who said he was advocating default. “People said I want to go and buy debt and default on debt, and I mean, these people are crazy. This is the United States government,” Trump told CNN.

Read: ‘Low-interest-rate’ Trump wants to replace Yellen, refinance U.S. debt.

Default is out of the question, he said in New York on Thursday.

“With the United States, you’re talking about something beyond the gold standard,” Trump said in a question-and-answer session after his speech. “You can discount, you can do things. But no, the debt of this country is absolutely sacred.”

This week, the Bipartisan Policy Center estimated the government’s borrowing limit is set to run out in mid-March. The U.S. Treasury has in the past taken “extraordinary measures” to make sure the government doesn’t default. Fights over raising the debt limit have broken out between President Barack Obama and congressional Republicans, rattling investors.

Read: U.S. debt ceiling of $20 trillion-plus to be reached soon in next presidency.