Producers have edited next Saturday's episode of Doctor Who after deciding a sound effect was "a bit too horrible".
The episode, to be shown on BBC One on Saturday, features the Doctor battling a deadly virus during World War II.
In the scene an actor's face turns into a gas mask, but the sound of a skull breaking has been removed because it makes the scene too frightening.
But producer Phil Collinson did say it was still the scariest episode so far: "It was about time we did a scary one."
"Doctor Who is well-known for being spooky and scary," he added.
It's not unusual for programme makers to change bits of a TV show after they've finished filming.
They often have to see the whole episode to see if a storyline is appropriate.