Last week, CEO Elon Musk insisted repeatedly that Tesla doesn’t need to raise more cash. On Monday, the company didn’t sound so sure.

The electric car maker warned in a securities filing it “may need or want to raise additional funds in the future,” adding that “these funds may not be available to us when we need or want them, or at all.”

That’s on the heels of a bizarre conference call last Wednesday in which Musk, asked by an analyst about Tesla’s cash needs, responded, “Boring, bonehead questions are not cool — next.”

Elsewhere on the call, Musk had said “no” and “I specifically don’t want to” when asked about whether Tesla will need to raise capital as it ramps up production of its mass-market Model 3 sedan.

On Monday, however, the company nevertheless revealed that, while it expects its current sources of liquidity are adequate for the next 12 months, it might look to raise more cash to keep growing its business.

“If we cannot raise additional funds when we need or want them, our operations and prospects could be negatively affected,” Tesla warned in the quarterly 10-Q filing with the Securities and Exchange Commission.

Tesla revealed last week that its cash burn swelled to $1 billion in the most recent quarter, leaving $2.67 billion on its balance sheet.

The company was recently cranking out 2,270 Model 3s a week, short of the 2,500 that Musk promised would be produced weekly by the end of the quarter.

A day after Musk’s comments, Moody’s said it expects Tesla to raise approximately $2 billion this year “in order to cover a cash burn during 2018.”

Still, the filing shows that Musk has put his money where his mouth is, purchasing 33,000 shares of Tesla valued at nearly $9.9 million and bringing his overall stake in the company to nearly 20 percent.

Tesla shares finished the day up 2.9 percent on Monday, reaching $302.77

A Tesla spokesperson dismissed the notion that the company will soon be raising additional funds, saying that “the standard language about potential risk factors has been a part of precious quarterly reports, including those from last year.”