  We express the mean square deflections of the ultra-high energy cosmic rays
(UHECR) caused by the random component of the Galactic magnetic field (GMF) in
terms of the GMF power spectrum. We use recent measurements of the GMF spectra
in several sky patches to estimate the deflections quantitatively. We find that
deflections due to the random field constitute $0.03-0.3$ of the deflections
which are due to the regular component and depend on the direction on the sky.
They are small enough not to preclude the identification of UHECR sources, but
large enough to be detected in the new generation of UHECR experiments.
