1989 760 turbo wagon -- door hinge pin

[JohnR]

The door hinge pin on the driver's door of my 760 keeps sliding up about 1/4 inch. This is enough to not have it make contact with the bottom part of the hinge, resulting in some door sag.
Question: Is this pin pressed in? Or does it have a clip at the bottom to prevent it from 'creeping up?'
Thanks for your ideas.