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 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.
Continuity mistake: After Tintin realises he was right that the man was Mueller, the shot then pans back to Mueller looking at his face in a small mirror. When the shot stops panning, there is nothing reflected in Mueller's mirror. The shot changes to a close-up of the mirror and Mueller's reflection suddenly appears in the mirror.
Plot hole: Thomson and Thompson fall asleep whilst driving their jeep and are arrested because whilst they were asleep, they drove into and damaged several people's markets and as well as driving into the wall of a building. Although the decision to arrest them would seem normal due to the vandalism, it does not make sense why both of the detectives would have gotten arrested. Even if they both fell asleep at the wheel, only one of the detectives was actually responsible for the vandalism caused by this.
Continuity mistake: Tintin is waiting for his meeting with the Emir in the castle. In the first interior shot of the castle whilst Tintin is waiting, the handle on the left side of the door is slightly lower than the handle on the right of the door. A few moments after Tintin walks into the room, the door closes behind him and the two door handles are suddenly level with each other.
Character mistake: The man who escorts Tintin into the Emir's office asks Tintin if he is here about "today's events in the market" (referring to Thomson and Thompson crashing their jeep), to which Tintin replies "Yes", but seconds later, when Tintin is explaining his reasons to the Emir for visiting him, he states the events with the jeep occurred yesterday.
Character mistake: When the bell on Haddock's clock rings, there is a shot showing the clock with the time on 8:00. All of the numbers used to represent the time shown on the clock are written in roman numerals, however, the roman numeral for the 8 shown on the clock is written out as VI. Eight in roman numerals should be VIII.
Other mistake: After Manolo has told Haddock that the windows don't open, Manolo goes to leave and slips on a banana placed in the doorway. The banana's position in the doorway would not be possible. The banana landed on the floor after Haddock fell over the table in the hotel room and spilled the contents of the fruit bowl all of the room and then Manolo entered the room a second later. When Manolo opened the door, he would have pushed anything in front of the door out of the way.
Continuity mistake: Whilst Tintin and Haddock are discussing how to escape the hotel, a record player is playing so no-one who is watching the conversation can hear them. When Pablo arrives with the drinks and sets them on the table, the record player is visible in the background and not moving, though the music is still heard. Pablo then goes to turn up the music, and the record player is suddenly moving again.
Revealing mistake: When Haddock walks in view of the helicopter pilot, it cuts to an interior shot of the helicopter where the pilot says "What's that? A Picaro by the river?" A couple of shots after this, there is another interior shot of the helicopter where the pilot then says "Caramba. He's disappeared." In both of the two interior shots, it is noticeable that the same footage has been used in both the shots as the exact same land is outside the helicopter is in both of the shots. The only difference in the second shot is that Haddock has been removed.
Plot hole: When the helicopter flies over the jungle, Haddock inadvertently walks in view of the helicopter and the pilot of the helicopter notices him, assuming it to be a Picaro. Haddock then trips into the river, but despite being watched by the pilot of the helicopter the entire time, the helicopter pilot doesn't notice him falling into the river and instead assumes he just disappeared.
Continuity mistake: When Haddock is in the lake, he is sinking, struggling to stay above the water and the water is even going up to his neck area. Tintin then goes into the lake to fetch Haddock and then stands in the exact same area where Haddock is up to his neck in the water, but the water only goes as far as Tintin's knees.
Audio problem: The drunk camp members are firing their guns and the gun shots are heard. Smoke is exiting some of the guns, implying that that particular gun has been fired, but no sound effect is heard going with along with that particular gunshot.