CHICAGO >> McDonald’s has been testing all-day breakfast for only a short time in select markets, but it could be rolled out nationwide as soon as October.

The Wall Street Journal, citing a memo sent to U.S. franchisees and employees Tuesday, said the results of its test of the expanded menu have been encouraging. The memo, according to the story, was sent by LeAnn Richards, a Tucson, Ariz., franchisee in charge of a task force looking at all-day breakfast.

Currently, most McDonald’s restaurants stop offering breakfast options around 10:30 a.m., and the chain has said there were operational issues to maintaining a kitchen that prepared breakfast items along with burgers and fries.

It would be one of many changes being undertaken by the burger giant, which is looking for ways to rebound after a prolonged sales decline.

McDonald’s, based in suburban Chicago, is scheduled to announce its second-quarter earnings and its June same-store sales Thursday.