In this paper we deal with the N-dimensional Stokes system in a
bounded domain with Dirichlet boundary conditions. The main result
establishes the null controllability with internal controls having one
vanishing component. This result improves a prior result by E.
Fernandez-Cara, S. Guerrero, O. Yu. Imanuvilov and J.-P. Puel: in
our paper the control domain can be arbitrary.