Let e be a homogeneous subset of R in the sense of Carleson. Let mu be a finite positive measure on R and H(mu)(x) its Hilbert transform. We prove that if lim(t ->infinity) t|e boolean AND{x vertical bar vertical bar H(mu)(x)| > t}| = 0, then mu(s)(e) = 0, where mu(s) is the singular part of mu.