Musk’s tweet came after former CEO Jack Dorsey said that he will not accept the role of Twitter CEO. In a reply to a Twitter user when asked if he would take the position of CEO, he said “nope.”

Tesla investors have been increasingly concerned about the time that Musk is devoting to turning around Twitter.

“There’s an initial burst of activity needed post-acquisition to reorganize the company,” Musk said in his testimony. “But then I expect to reduce my time at Twitter.”

Musk also admitted that some Tesla engineers were assisting in evaluating Twitter’s engineering teams, but he said it was on a “voluntary basis” and “after hours.”

The billionaire’ s first two weeks as Twitter’s owner has been marked by rapid change and chaos. He quickly fired Twitter’s previous CEO and other senior leaders and then laid off half its staff earlier this month.

Musk sent an email to Twitter employees early Wednesday, telling them they needed to decide by Thursday whether they wanted to stay on at the company to work “long hours at high intensity” or take a severance package of three months of pay.