The invention relates to a method of correcting local, machine-based inking nonuniformities on rotary printing machines, in which the following method steps are executed: Firstly, the inking behavior of the printing units of a multicolor rotary printing machine is determined by means of test plates. The inking nonuniformities on the test plates are transmitted to the pre-press stage. Using the data about the inking nonuniformities of the test plates, the raster tonal values of the color separations of a printing plate are modified in such a way that the inking nonuniformities are maintained locally on the basis of the location of their occurrence in the print on the printing plates or films.
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