Continuity mistake: Whilst examining the wrapper with "Karaboudjan" written on it, the "K" is a centimeter away from the letter "A" and all the other letters are about a fifth of a centimeter away from the letters. Tintin then places a magnifying glass above the word "Karaboudjan". After doing this, the "K" that was a centimeter away from the "A" is now a fifth of a centimeter away from the "A", but none of the other letters seem to have changed distances.
Continuity mistake: When Tintin is handed the letter that says the Emir's son has been kidnapped, there is a close-up shot of him holding it. When the shot cuts to Tintin handing the letter back to the Emir, for a split second his hands have changed position. More writing also appears on the letter.
Revealing mistake: The Emir is always shown wearing a black robe with a yellow stripe down each sleeve. When the Emir is telling Tintin it was Bab El Ehr who kidnapped his son, there is a portion of the yellow strip next to the cane he is holding around his elbow, that keeps flickering from yellow to black and back to yellow again. This occurs three times in one shot.
Other mistake: When Tintin and the Emir are talking with the military adviser, the Emir holds a box of cigars and lets the military adviser take one out of the box. The military adviser then takes out one of the cigars from the box, but the amount of cigars in the box remains the same.
Continuity mistake: When Tintin is investigating Mueller's room, he comes across a file with various articles in it. Before Tintin goes to pick up the file, the articles are on the right hand side of the file, but when he has the file in his hand, in the exact same shot, several articles have immediately appeared on the left hand side of it.
Continuity mistake: When Tintin opens the secret passageway, the fireplace retreats backwards leaving an open gap about several feet wide in the fireplace. As he heads down into the passageway a couple of shots later, the open gap in the fireplace has suddenly expanded much further.
Continuity mistake: After Mueller has caught Abdullah, Tintin shoots the lock off one of the cells and hides in it. When he is inside, the bullet damage from when he shot the lock is visible and is coloured green. A few shots later, the damage is suddenly beige and the same colour as the door. Then a few shots after that, the damage is suddenly green again.
Continuity mistake: After Thomson and Thompson have inadvertently taken the Formula 14, Tintin, Haddock and Abdullah approach them with Mueller. There are oil stains all over one of side of Mueller's jacket and no oil stains on the other side, but after Thompson tells Mueller to get in the car, there are oil stains all over the jacket.
Continuity mistake: When Abdullah opens the cell door, Tintin runs in and grabs Abdullah leaving the door open by a few inches. The shot cuts to the guard that Tintin had knocked out, and the door, visible in the background, is suddenly open entirely. The door has also changed from being grey to beige.
Continuity mistake: After Mueller's car has crashed and Abdullah asks for ice-cream, Mueller replies "Ice-cream?" and we can see his tie is unfastened. In the next shot, Mueller doesn't move, but when the shot cuts back, Mueller's tie is suddenly fastened completely.
Continuity mistake: On the drive back, Tintin looks at the bottle of Formula 14 pills. In a close-up of Tintin looking at the bottle, the bottle is blue, but after Mueller tells Tintin if he destroys the pills he can make him rich, the bottle is suddenly green.
Continuity mistake: When the military police are looking through the detectives' bags, one of them finds a bag that Thomson and Thompson assume to be the secret documents. The man begins to shake it and diamonds fall out. In the first shot of the diamonds falling out, as the shot ends, two diamonds are in the man's hand, followed by a third diamond falling out. The shot cuts and there are suddenly five diamonds in the man's hand, followed by a sixth diamond that falls out.