It looks like Apple manufacturer Foxconn may not be entirely ready to displace its human workforce in favor of robots just yet.

According to a new report coming out of the Taiwanese media, Foxconn’s CEO Terry Gou is disappointed by the company’s current generation of so-called “Foxbots,” which supposedly fell short of expectations in terms of both proficiency and flexibility.

Apple gadgets you buy in the future may have been assembled by machines as Apple’s biggest manufacturing partner, Foxconn, begins replacing its workers with robots. The move is expected to improve efficiency in Foxconn’s Chinese plants, as well as combat rising labor costs.