Abstract: Device for correcting the geometry of the image created on the screen of a cathode-ray tube, comprising a first set of four coils arranged in series one with the other, coiled on a magnetic core, the said coils being traversed by at least a portion of the horizontal deflection current, at least one permanent magnet intended to apply to the core a magnetic field oriented in one direction for one of the pairs of coils and in the opposite direction for the second pair, and a second set of two coils in series one with the other and arranged around the magnetic core so as to contain the magnetic fluxes created by the first set of coils, the two coils being traversed by at least part of the vertical deflection current and arranged so as to create, in the magnetic core, magnetic fluxes oriented in one direction in one of the pairs of coils of the first set and in the opposite direction in the second pair of the first set. The device makes it possible to correct both the horizontal and vertical geometrical defects.