%0 Journal Article %T Erratum: Degenerate diffusion with a drift potential: A viscosity solution approach %A Inwon C. Kim %J Mathematics %D 2010 %I arXiv %X The earlier paper [LK] (arXiv:0910.3432) contains a lower bound of the solution in terms of its $L^1$ norm, which is incorrect. In this note we explain the mistake and present a correction to it under the restriction that the permeability constant $m$ satisfies $1< m <2$. As a consequence, the quantitative estimates on the convergence rate (Main Theorem (c) and Theorem 3.6 in [LK] only hold for $1