special variable for compound meters

[Stefan Thomas]

Dear community,
in 2.14. I've been quite frequently using a special variable for compound meters. I would like to use it in the same way as before, but unfortunately it doesn't work in 2.16.
How can I update it?

%%%%%%%%% SNIP %%%%%%%%%%%%
\version "2.16.0"
aksak = #(define-music-function
  (parser layout zaehler nenner compound) (number? number? list?)
  #{
$(set-time-signature zaehler nenner compound)
  #})

\relative c' {
  \aksak #7 #8 #'(4 3)
  c8 d e f e d c
}
%%%%%%%%%% END %%%%%%%%