The present disclosure relates to a fuel tank including a tank wall which has at least two wall sections opposite one another and a stiffening device situated between the two opposite wall sections, and a method for manufacturing such a fuel tank. According to the present disclosure, it is provided that the stiffening device includes at least one connecting strut, each end of which has a profile section, which engages with one complementary profile section each on the two opposite wall sections of the container wall in a tension-resistant manner in such a way that the connecting strut absorbs compressive forces acting on the container wall.