fix a first-grader mistake in f43f518
fix a first-grader mistake in f43f518

douglas-larocca/why3,jpdeplaix/why3,ssaavedra/why3,jpdeplaix/why3,ssaavedra/why3,jpdeplaix/why3,ssaavedra/why3,douglas-larocca/why3,douglas-larocca/why3