  The CP violating asymmetry between the partial decay rates of $H^+ \to W^+
h^0$ and $H^- \to W^- h^0$ is calculated at one-loop level in MSSM with complex
parameters. The dependence on the phases of $A_\tau$ and $M_1$ is discussed.
Different values of $\tan \beta$ are considered. The asymmetry is up to the
order of $10^{-2} $.
