Box office performance of a film is unpredictable and one has to be prepared for it, believes Katrina Kaif. The actress whose last film Thugs of Hindostan failed miserably echoed her co-actor Aamir Khan's view. Katrina said something went wrong with Thugs of Hindostan.

Last month, her Thugs of Hindostan co-star Aamir Khan had taken "full responsibility" for the film's failure. "I know Aamir has spoken on the matter and it has really hurt deeply and personally. Disappointment is always good as it wakes you up little bit again. In case of Thugs, it was not for lack of trying, something just went wrong in case of Thugs of Hindostan. You need to have guts and urge to try things and be prepared it may or may not work," Katrina said in an interview.

The actor is looking forward to the release of her next Zero, in which she plays a troubled movie star, Babita. Katrina said it is hard to tell how a film will do at the box office before it hits the screens. However, in case of Zero she has full faith in director Aanand L Rai. "With regards to Zero, it is hard to say. You never know from before a film (whether it will work or not). Lot of work has gone into it. It is hard to tell. I believe it is a good film and is a good story. Aanand L Rai is one of the finest storytellers in our cinema. His story connects with people. His emotion connect is good. You have to wait till the film releases. You will have the answer..." she said.

Starring Shah Rukh Khan and Anushka Sharma, Zero opens in theatres on December 21. In the movie, SRK plays a vertically challenged person.