Elon Musk, the CEO of Twitter, revealed in a series of tweets on Saturday that users of the company’s subscription service would see less advertising, including an ad-free version. The statement comes at a time when the social network has experienced considerable economic uncertainty since Musk’s takeover in October. Additionally, Musk said that “there will be a higher expensive subscription that allows zero advertisements.” That would be a significant change in Twitter’s business strategy, which up until the launch of a paid subscription service in mid-December has depended on targeted advertising to generate revenue. However, following Musk’s decision to fire around half of the 7,500-person workforce of the firm in late 2017, advertising has recently become a source of concern for Twitter. The action sparked worries that the business lacked the manpower to manage content control and intimidate regulators and advertisers.