%'e obtain a formula for the general N-dimensional optical theorem in quantum mechanics, generalizing the standard result for three dimensions. It is obtained by an application of the method of steepest descents. The formula holds for arbitrary (anisotropic, nonlocal) short-range potentials. PACS number{s): 03.65.Nk, 03.65.Ge In [1], Adawi wrote a formula for the optical theorem in N-dimensional quantum scattering, in which he assumed isotropic potentials and used partial-wave analysis. In this note, we shall deduce the same result for

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