  This note discusses the late-time decay of perturbations outside extremal
Reissner-Nordstrom black hole. We consider individual spherical-harmonic modes
$l$ of massless scalar field. The initial data are assumed to be of compact
support, with generic regular behavior across the horizon. The scalar
perturbations are found to decay at late time as $t^{-(2l+2)}$. We also provide
the spatial dependence of the late-time tails, including the exact overall
pre-factor.
