[O] editing scheme fragments

[Roger Mason]

Hello,

When I try to edit a scheme fragment such this

Header:
#+BEGIN_SRC scheme :tangle "header.skb" 
(document :title [A First Skribilo Block]
          :author [Roger Mason]
#+END_SRC

using C-c ', org thinks it is an org table.

I am using GNU Emacs 25.1.1 (i386-portbld-freebsd10.1, GTK+ Version
2.24.29) of 2016-11-04 and Org mode version 9.0.1
(release_9.0.1-47-gb06259)

Any help in tracking this down would be much appreciated.

Thanks,
Roger