353Under Article 16 of Regulation No 139/2004, the Court of Justice of the European Union is to have unlimited jurisdiction to review decisions whereby the Commission has fixed a fine or periodic penalty payment; it may cancel, reduce or increase the fine or periodic penalty payment imposed. That jurisdiction empowers the Courts, in addition to carrying out a mere review of the lawfulness of the penalty, to substitute their own appraisal for the Commission’s and, consequently, to cancel, reduce or increase the fine or penalty payment imposed (see judgment of 26 October 2017, Marine Harvest v Commission, T‑704/14, EU:T:2017:753, paragraph 581 and the case-law cited).