Errors in the article by Fukamachi, Jongsukswat, Ju, Negishi, Hirano & Kawamura [J. Appl. Cryst. (2014), 47, 1267-1272] are corrected.[This corrects the article DOI: 10.1107/S1600576714012114.].
Keywords: X-ray difractometers; dynamical theory of X-ray diffraction; interference fringes; mirage diffraction; mirage fringes; monochromators.