Continuity mistake: In the Middle-Age, Frénégonde knocks Jean-Pierre with a box. It disappears the following shot and appears again in her hands some shots later.
Continuity mistake: In the Middle-Age, Jacquouille throws the branch twice at the wolves.
Revealing mistake: After Godefroy yells to the Inquisitors, he touches the wall and it shakes.
Continuity mistake: Late in the film, when Jacquoille and Godefroy steal the police van, they roll through the woods and strike a postal vehicle. When both vehicles come to a stop, the direction of the police van from the postal vehicle's driver should be across the right headlight of the postal vehicle as the postman alights his vehicle, but he gets out and looks much more to his left.
Factual error: Beatrice is a different woman in this movie than the first movie. The Beatrice from the first movie is the lady who asks Uber and Jacoille to scare her child so he could do his homework.
Visible crew/equipment: When Godefroy is threatening Jacquouille to returns to the Middle-Age with him, the shadow of the crew is visible.
Continuity mistake: During the wedding, Jacquouille takes the microphone of the singer, it's not attached. The shot later, it got a wire.
Visible crew/equipment: When Jacquouille is trying to drive the police truck, there's sometimes a third person visible from outside.
Continuity mistake: The telephone on the bar in Béatrice's house change place form the time when Lady Ginette steals wine and when Jean-Pierre calls the firemen.
Continuity mistake: When Jacquouille and Lady Ginette go to Béatrice's house, Jean-Pierre closes the door on Jacquouille and hurts him. Lady Ginette checks his hand, but they are doing nothing when Béatrice opens the door and Ginette watch his hands again after that.
Continuity mistake: In the opening credits, there's the scene from the first film where Jacquouille and Godefroy attacks the postman. His truck keeps changing place on the road.
Continuity mistake: When the police truck is going down the hill, Jacquouille can't control it and you can see from behind the truck that he tries to exit from his seat but in the next shot, he's still on the seat.
Continuity mistake: When Jacquard travels to the future, he's transformed in "a brown stuff", but it is smaller in the next shot.
Continuity mistake: When the old couple is trying to escape from Godefroy and Jacquouille, the man goes outside to close the rear door, but it's still opened the shot later.
Continuity mistake: When Jean-Pierre is disturbed by Jacquouille when he is working on the teeth of the snob woman, he walks to the window to see what's going on. The window is stripped frosted and clear but in one shot, it is completely clear.
Visible crew/equipment: When the old couple is trying to escapes from Godefroy and Jacquouille, there's a reflection of the microphone on their car.
Continuity mistake: After Jacquouille throws the knife at the man that's living with Cora, Béatrice comes forward in front of Jacquouille and Lady Ginette to say that it was the man's fault, but after Godefroy's daughter comes onto the scene, it is visible that Béatrice is standing behind Lady Ginette and Jacquouille.
Continuity mistake: When Lady Ginette is in the kitchen after the fire, there's a lot of smoke. It has disappeared when she opens the freezer to take ice and there's smoke again in the following shot.
Continuity mistake: When the old couple is trying to escape from Jacquouille and Godefroy, the window on the roof of their car is opened but it closes itself some shots later.
Continuity mistake: When Jacquouille and Lady Ginette arrive at Béatrice's house, there's one shot when the wind is so strong that they have difficulty walking normally but there's no wind in the rest of the scene.
