164It is settled case-law that the obligation to state reasons is an essential procedural requirement, as distinct from the question whether the reasons given are correct, which goes to the substantive legality of the contested measure. Objections and arguments which aim to challenge the merits of that measure are therefore ineffective in a plea alleging failure to state reasons, or that the reasons stated are insufficient (see, to that effect, judgments of 22 March 2001, France v Commission, C‑17/99, EU:C:2001:178, paragraphs 35 to 38, and of 15 June 2005, Corsica Ferries France v Commission, T‑349/03, EU:T:2005:221, paragraphs 52 and 59).