Mia Wasikowska relied on her 'Jane Eyre' co-stars to distract her from the "bleak" storyline.
The Australian actress - who plays the titular character in the new movie adaptation of Charlotte Bronte's classic novel - revealed despite the dark subject material, she loved working with Jamie Bell and Michael Fassbender because they were constantly joking around on set.
She said: "Jamie Bell and Michael Fassbender are just fantastic. To counter the intensity of the material, we had a lot of fun in between set-ups and scenes, and that was vital. You really have to get your energy from somewhere, so if you're able to have fun and then use that energy, and channel that into the mood and feel of the film, that's always really helpful.
"To have two co-stars like Michael and Jamie was fantastic. There were just a lot of funny things that happened."
Mia wasn't the only one on set who was fond of Michael (Lord Rochester) - she revealed his horse also took a liking to him.
She explained to screencrave.com: "Michael had a very huge effect on any horse he got on. On the Third Day of filming, we were shooting the scene where Jane and Rochester meet, and every time Michael hopped on the horse, it got a huge erection. He'd get off and they'd run the poor thing around the block to get it to go away, and then he'd hop on and it would happen all over again. That was great."