Continuity mistake: When Gibert is reprimanding the police, you can see a clock in background. It reads 11:55, but when the scene ends, the clock still reads 11:55. The scene lasts at least three minutes and the clock didn't move. (00:29:20 - 00:31:50)
Continuity mistake: When Daniel goes to meet Lilly, he puts pregnancy test behind his ear. The pregnancy test changes its position in the following scene. (00:38:35)
Continuity mistake: When Daniel and Emilien find the Santa Claus gang's hideout, Emilien opens the door and falls out into the snow. From the outside shot you can see the taxi has got wheels when they were changed into tracks earlier.
Continuity mistake: When the Santa Claus gang is being pursued by the policemen, they pass through a house with their bigfoot. There is a lot of debris on the ground but when the police cars pass, the debris are beside the road.