Christopher Nolan may have to make changes to the final sound mix of 'The Dark Knight Rises' after worries about fans not being able to hear Bane - played by Tom Hardy - in the trailer.
Studio Warner Bros. is said to be concerned after online reaction to the first trailer of the highly-anticipated film noted it was difficult to understand villain Bane - played by Tom Hardy.
The character draws super-human strength from a drug which he must constantly inhale, meaning his mouth is covered in the movie.
Websites including IO9 and What Would Tyler Durden Do, as well as fans of twitter, have noted the problem, and the studio has spoken to the filmmaker to ask him to make changes.
However, he has drawn the line at a complete re-working.
A source told the Hollywood Reporter: "Chris wants the audience to catch up and participate rather than push everything at them. He doesn't dumb things down. You've got to pedal faster to keep up."