Method for operating internal combustion engine

The present invention discloses a method of operating an internal combustion engine, in particular a gas engine, comprising at least one combustion chamber (2) to which a charge air (A) is fed with a variable charge pressure (pa) and/or a variable amount of charge air, wherein a cylinder pressure value (pi) is ascertained from at least one measurement value (pc) of a sensor (3) arranged in the at least one combustion chamber (2), wherein the cylinder pressure value (pi) is regulated by altering the charge pressure (pa) and/or by altering the amount of charge air as a setting value or values to a cylinder pressure target value (pi), wherein the cylinder pressure target value (ps) is selected in dependence on a power of the internal combustion engine (1).