Brad Pitt has joked that he considers himself to be an ''old man''.

Brad Pitt considers himself to be an "old man".

The `Moneyball' actor recently injured his knee after falling down a hill while carrying his three-year-old daughter Vivienne, and although he now has to use a cane to walk, he insists the incident wasn't a "life or death" matter.

Speaking about the fall, he told People.com: "It wasn't life or death. It was just an old man tripping. It's not too bad."

It wasn't life or death. It was just an old man tripping. It's not too bad.

The 48-year-old star - who also raises Maddox, 10, Pax, eight, Zahara, six, Shiloh, five, and Vivienne's twin brother Knox, with partner Angelina Jolie - previously admitted he put his own body on the line in order to protect his daughter during the tumble.

Brad said: "I was carrying my daughter Vivienne down the hill and I slipped. It was either her or me."

However, Angelina admitted the couple are constantly suffering injuries while caring for their offspring.

She explained: "I think all parents get injured in the line of fire. When Maddox was young, I fell and hurt my elbow. It's a pretty common occurrence."