Boom mic visible: At the end of the gravity wheel sequence, the camera pans up to look at the crowd showing the boom mic in the centre of the screen.
Continuity: When Antoine and René go to the cinema René wears a black coat, but in one shot he is wearing just a jacket.
Crew or equipment visible: When Antoine is looking in the mirror, and his father is behind him, the camera is reflected in the mirror.
Crew or equipment visible: In the end of the movie, right as Antoine reaches the water's edge, the shadows of the crew can be seen on the sand.
Crew or equipment visible: At the end of the movie, crew footprints can be seen in the sand on the beach.
Audio/visual unsynchronized: About after one hour of the movie, when the two boys run in the Sacre Coeur's stairs where they mock a priest, René's jacket changed. It's now longer and black. And just after when they come back to his house, he is wearing again the first jacket.
Continuity: Position of Antoine's hands on the door when Rene comes to visit changes.
Continuity: While talking with his mother after his bath, the position of Antoine's hand that holds his head changes.
Continuity: When carrying the typewriter, Antoine's hair is mussed, but it is in place when he puts on his hat.