Method of controlling a fuel injection

Disclosed is a method of controlling an amount of fuel to be injected by a fuel injector 160 into a cylinder 125 of an internal combustion engine 110. A map 515 stories values of a fuel injection quantity drift of said injector, with map points 520 of the map 515 being arranged along an x-axis and along a y-axis representing engine operating points, the engine operating points being defined by different values of engine speed and requested amount of fuel to be injected by the fuel injector. The method comprises the steps of estimating a fuel injection quantity drift and storing it in a corresponding map point 520' to a current engine operating point, selecting a set of map points 520" whose distance from said corresponding map point 520' is smaller than a given distance, modifying all map points of said set of map points 520" by multiplying their entries by a radial weighing factor, defining the amount of fuel to be injected by the fuel injector to be the requested amount of fuel corrected by means of thecorresponding entry of the map.