In recent x‐ray moire´ topographic experiments a dislocationlike discontinuity of moire´ fringes has been found despite the fact that specimens (Si bicrystal) were dislocation free. This discontinuity, although similar in appearance to the fringe discontinuity known as moire´ dislocation, should be essentially distinguished from it. Preliminary considerations suggest that the outbreak of such pseudo‐moire´ dislocations is related not only to the wave‐field phase due to the moire´ effect, but to the phase of extinction fringes. Pseudo‐moire´ dislocations commonly occur in plane‐wave x‐ray moire´ topography of slightly strained specimens. ©1996 American Institute of Physics.