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In a recent paper [J. Chem. Phys.126, 194708 (2007)] on mean first passage time, Kalinay cites the simulation results of Bowles et al. [J. Chem. Phys.121, 10668 (2004)] for two diffusing disks to support the validity of the Fick–Jacobs type of method used in his paper. This comment points out that Kalinay’s reference to the results of Bowles et al. is inaccurate and incomplete. The kind of support for the Fick–Jacobs method as suggested by Kalinay does not exist in the data of Bowles et al. [ABSTRACT FROM AUTHOR]