  We present a deformation of the action principle for a free tensor field of
mixed symmetry (2,1) --the Curtright action, a dual formulation of
five-dimensional linearized gravity. It is constructed as the dual theory of
the Einstein-Hilbert action linearized around a de Sitter background, and its
derivation relies on the use of the two-potential formalism as an intermediate
step. The resulting action principle is spatially non-local and space-time
covariance is not manifest, thus overcoming previous no-go results.
