A method for regulating illumination in an interior having a cover region as well as an illumination region to be illuminated, which illumination region is opposite the cover region, with the steps: activating the electrical interior-illuminating means illuminating the illumination region, registering a first illumination value in the illumination region by first sensor means directed at the illumination region and/or set up to register the first illumination value in the illumination region, regulating a light output of the interior-illuminating means to an illumination set value which is a regulating set value of the illumination regulation, as a reaction to the output signal of the first sensor means, additionally registering a second illumination value in an extended illumination-registering region in the interior using second sensor means provided separately from the first sensor means, which extended illumination-registering region lies at least partly outside the illumination region as well as a registering region of the first sensor means, characterised by adapting the illumination set value such that no change in light output occurs if a registered change in first illumination value in a period is detected as being disproportionately higher than a registered change in second illumination value in the period, wherein the adaptation of the illumination set value is a reduction in the illumination set value if the registered change in first illumination value is a reduction in first illumination value, and the adaptation of the illumination set value is an increase in illumination set value if the registered change in first illumination value is an increase in first illumination value. activating the electrical interior-illuminating means illuminating the illumination region, registering a first illumination value in the illumination region by first sensor means directed at the illumination region and/or set up to register the first illumination value in the illumination region, regulating a light output of the interior-illuminating means to an illumination set value which is a regulating set value of the illumination regulation, as a reaction to the output signal of the first sensor means, additionally registering a second illumination value in an extended illumination-registering region in the interior using second sensor means provided separately from the first sensor means, which extended illumination-registering region lies at least partly outside the illumination region as well as a registering region of the first sensor means, characterised by adapting the illumination set value such that no change in light output occurs if a registered change in first illumination value in a period is detected as being disproportionately higher than a registered change in second illumination value in the period, wherein the adaptation of the illumination set value is a reduction in the illumination set value if the registered change in first illumination value is a reduction in first illumination value, and the adaptation of the illumination set value is an increase in illumination set value if the registered change in first illumination value is an increase in first illumination value.