Custom post type child page slug

Hello,

I’m working on a little project where I have a custom post type and a few child pages of these posts (pages). The problem I have is that when I list the child pages of a current event chosen, it ignores the slug I have set it to use. The link works, but the slug is not there.

So for example, when I am on the event 1 page, it looks like this:
localhost/seminars/events/event1/

I see the child pages listed, but their links skips the events slug.
So it looks like
localhost/seminars/event1/child1/

When I want it to look like
localhost/seminars/events/event1/child1/

Any ideas of what I am doing wrong, or what I could do to solve it?
Thanks