An aircraft assembly is disclosed including a longitudinal spar and an aerofoil cover integrally formed from a composite laminate material to form a spar-cover such that the composite material of the spar extends continuously into the cover through a fold region created between the spar and the cover. The spar and cover are separated by a recess at a longitudinal end of the fold region to define a spar end region and a cover end region, and a reinforcement element extends between the spar end region and the cover end region to couple the spar end region with the cover end region.