Awning light cover

Can anyone tell me how to remove the cover to the external light on a 2006 Nuevo to check for possible faulty connection?  There doesn't seem to be any obvious screws but don't want to try prising it off if there are hidden fixings.

Hoping for a simple solution.

Piece of cake.  Drive past a tree with low-hanging branches. Off it pops!

I believe there is a small indentation to insert the blade of a screwdriver, twist and it should come off.