Can't remove a bookmark when db is deleted

I have a database bookmark which I put on my bookmark bar (root level). I then deleted the database with my administration client. When I try to remove the bookmark by right-click the bookmark, I get the dialog that this database cannot be found and I have to look on a server.

When I Cancel nothing happens.

When I push OK I get the error “a replica of this…”

How can I delete this bookmark?