NASA has cancelled its plans for an all-female spacewalk due to a lack of spacesuits that fit women astronauts. While Friday’s much-anticipated spacewalk will still take place, one of the two women scheduled for the journey, Anne C. McClain, will have to stay back. A man will accompany astronaut Christina H. Koch in her place.

Both McClain and Koch required medium spacesuit torso sections, and there is currently only one that is properly configured at the International Space Station, NASA said in a statement on Monday.

Hillary Clinton was one of many people who had been looking forward to the historic mission and took to Twitter to voice disappointment at NASA’s announcement, writing “make another suit.”

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