United Kingdom, Aug. 5 -- Jessica Biel won't let her sons eat McDonald's.

The Sinner actress - who has Silas, 10, and five-year-old Phineas with husband Justin Timberlake - is not "crazy strict" when it comes to her kids' diets but she won't give into their requests for burgers from the fast food chain because she isn't convinced of the "quality" of their food.

She told Parade: "I'm like, 'Sorry, guys, I'm not doing it.' They don't get McDonald's.

"I just feel like I don't know what's going on with [the] quality of that food. It's stuff like that that I'm like, 'No, we're not, Let's go have a great burger and fries at a fancy place. I'd rather pay more for you to have something fancy than something like that.'

"I guess I'm not crazy, ...