Crib help

My daughter sleeps in her crib like a champ but ever since she has been rolling over consistently she often does so in her sleep and will be tummy sleeping. She actually moves around quite a bit when she sleeps so aside from just rolling from back to tummy she also is often at a slant in the crib. Anyhow, she has a solid back crib and it seems like almost every morning that she wakes up and her monitor alerts me that she’s awake she inadvertently bangs her head on the solid back of her crib 😳

How do I get her to stop doing this and is this a huge problem? She doesn’t seem to be bothered by it but it makes me worry a lot.