It seems women can’t even escape sexism in space. NASA has canceled what it announced this month would be the historic first all-women spacewalk—because there’s only one spacesuit that fits the two female astronauts. The walk, scheduled to take place March 29, was supposed to be carried out by astronauts Christina Koch and Anne McClain. But male astronaut Nick Hague will now take McClain’s place. “McClain learned during her first spacewalk that a medium-size hard upper torso—essentially the shirt of the spacesuit—fits her best,” NASA said Monday. “Because only one medium-size torso can be made ready by Friday, March 29, Koch will wear it.” McClain is expected to perform a spacewalk with Canadian astronaut David Saint-Jacques on April 8 instead.