No, it's pretty easy. I'm a big guy and it hasn't popped off yet. What I've done is make sure the belt is not twisted while it's in the loop. Try it w/o out actually being in the seat. Bring the seat belt across the seat and latch it. Make sure the belt itself is flush with the seat by the loop. If the belt is twisted and not flush while in the loop it will pop off, and gets worse when you are in the seat. Hope that helped.