Continuity: When Jean-Do is shaving his father, there is suddenly a lot more shaving cream under his nose where he had already been shaved. Also, because the camera is so close, you can tell that he had no stubble anywhere to begin with.

Factual error: In the scene where Jean-Dominique is taken on a boat ride, A 'Speedferries' vessel can be se in the background. This company did not commence business until 2004, years after the time in which the story is set and years after Bauby's death in 1997.