This study examines the problem of MHD flow in a vertical wavy porous space in the presence of a temperature-dependent heat source with slip-flow boundary condition. The equations of momentum, energy, and concentration are subject to a set of appropriate boundary conditions assuming that the solution consists of two parts: a mean part and a perturbed part. The solution of the perturbed part has been obtained by using the long-wave approximation. The mean part (zeroth-order), first-order velocity, and the total solution of the problem have been evaluated numerically for several sets of values of the parameters relating to the problem. The skin friction and the rate of heat and mass transfer coefficients at the walls are obtained and illustrated graphically.