Auto detecting content type

Hello there

We use traefik 1.7x in our kubernetes clusters.
We use traefik as an external load balancer type service to attain better load balancing between our services. We haven’t had much luck with k8s native services.

However we notice that when using traefik this way, if the the downstream service doesn’t have a content type header, traefik seems to introduce one.

Is there a way to disable this behavior ?