It puzzles me too. It could be just the single stitch left on the right needle from the cast off that goes on the stitch holder (or it could mean the single middle stitch at the split between front and back at the spout). I'd read ahead and see what it says to do with the stitch or stitches on the holder. That may make it easier to figure out what to do here.
Can you post a link to the pattern or give the pattern name?