In the 135 minute version of the film a nightclub reveler laughs about Gainsbourg being parodied on 'Guignols de l'info' (a French puppet show in which celebrities are mocked) but in the same scene Gainsbourg meets Bambou for the first time (his last wife). He married Bambou in 1981 but the Guignols were only created in 1988.
The young Gainsbourg is shown drawing left-handed, but the adult Gainsbourg becomes right-handed.