Method for correcting an amount of fuel injected in the case of an air pathway error of a cylinder of an internal combustion engine of a motor vehicle, characterised in that an amount of fuel injected into the cylinder is corrected, wherein - a moment value of the cylinder is determined, - a lambda value (λ1) of the cylinder is determined, - a moment reference value (Mref) and a lambda reference value (λref) are determined, and - depending on a comparison of the moment value to the moment reference value (Mref) and depending on a comparison of the lambda value (λ1) to the lambda reference value (λref), the type of an air/fuel mixture error is equated with the fuel pathway error of the cylinder or the air pathway error of the cylinder, wherein an erroneous deviation of an actual air quantity feed from a target air quantity feed to the cylinder is meant by the term "air pathway error" and wherein, in the case of an air pathway error, it is not possible to equate both the moment values (M1, M2, M3, M4) and the lambda values (λ1, λ2, λ3, λ4) solely by correcting the fuel quantity, characterised in that - at an air pathway error with a minor deviation (Δλ1) of the lambda value (λ1) of the cylinder from the lambda reference value (λref) up to a limit deviation (Δλ1G) of the lambda value (λ1) of the cylinder from the lambda reference value (λref), the amount of fuel injected into the cylinder is changed as a function of the air pathway error to an approximation and/or an equation of a moment contribution of the cylinder with respect to moment contributions of other cylinders (2, 3, 4) of the internal combustion engine while increasing the deviation (Δλ1) of the lambda value (λ1) of the cylinder from the lambda reference value (λref) with respect to lambda values of other cylinders (2, 3, 4) of the internal combustion engine, - at an air pathway error with the limit deviation (Δλ1G) of the lambda value (λ1) of the cylinder from the lambda reference value (λref), the amount of fuel injected into the cylinder is changed as a function of the air pathway error for holding the lambda value (λ1) constant. - a moment value of the cylinder is determined, - a lambda value (λ1) of the cylinder is determined, - a moment reference value (Mref) and a lambda reference value (λref) are determined, and - depending on a comparison of the moment value to the moment reference value (Mref) and depending on a comparison of the lambda value (λ1) to the lambda reference value (λref), the type of an air/fuel mixture error is equated with the fuel pathway error of the cylinder or the air pathway error of the cylinder, wherein an erroneous deviation of an actual air quantity feed from a target air quantity feed to the cylinder is meant by the term "air pathway error" and wherein, in the case of an air pathway error, it is not possible to equate both the moment values (M1, M2, M3, M4) and the lambda values (λ1, λ2, λ3, λ4) solely by correcting the fuel quantity, - at an air pathway error with a minor deviation (Δλ1) of the lambda value (λ1) of the cylinder from the lambda reference value (λref) up to a limit deviation (Δλ1G) of the lambda value (λ1) of the cylinder from the lambda reference value (λref), the amount of fuel injected into the cylinder is changed as a function of the air pathway error to an approximation and/or an equation of a moment contribution of the cylinder with respect to moment contributions of other cylinders (2, 3, 4) of the internal combustion engine while increasing the deviation (Δλ1) of the lambda value (λ1) of the cylinder from the lambda reference value (λref) with respect to lambda values of other cylinders (2, 3, 4) of the internal combustion engine, - at an air pathway error with the limit deviation (Δλ1G) of the lambda value (λ1) of the cylinder from the lambda reference value (λref), the amount of fuel injected into the cylinder is changed as a function of the air pathway error for holding the lambda value (λ1) constant.