Near the end, when Pierre is on a public phone at Dupleix, a poster near him reads "DIMANCHE 31 MAI" (Sunday 31 May), advertising a meeting of the Parti Socialiste Unifié. May 31st was a Sunday in 1959, and this scene was filmed in late 1958. However, the film is supposed to be taking place in June 1957, so it makes no sense that a meeting is being advertised nearly 2 years in advance.