  We study N=2 supersymmetric U(1) gauge theory in non(anti)commutative N=2
harmonic superspace with the singlet deformation, which preserves chirality. We
construct a Lagrangian which is invariant under both the deformed gauge and
supersymmetry transformations. We find the field redefinition such that the N=2
vector multilplet transforms canonically under the deformed symmetries.
