Here we have examined Kelly et al.'s  and Gerkema's  definitions of internal-tide pressure in a wedge connected to a flat abyss. We have found that Gerkema's  definition of internal-tide pressure: (1) does not allow for wave drag, (2) is incompatible with the accepted baroclinicity condition over a flat bottom, and (3) does not produce physically relevant energy flux. Conversely, Kelly et al.'s  definition of internal-tide pressure is free from these problems. We therefore conclude that Gerkema's  objections to Kelly et al.  are unfounded, and internal-tide pressure is most accurately defined by Kelly et al. . Contrary to the conclusions of Gerkema and van Haren  and Gerkema , horizontal pressure gradients are not necessary for computing depth profiles of energy flux. The method for calculating energy fluxes proposed by Kunze et al.  (and modified by Kelly et al. ) remains the most accurate means of assessing energetics from conductivity-temperature-depth/lowered acoustic Doppler current profiler (CTD/lowered ADCP) data.