Whitelisting rules

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In http://www.learndatalogtoday.org/chapter/8 excercise 1, it would be nice to be able to use other rules. But it seems there's a whitelist that's prohibiting me in doing so:

Rules:
[[(friends ?p1 ?p2)
(associated-with ?p1 ?movie)
(associated-with ?p2 ?movie)]
[(associated-with ?person ?movie)
[?movie :movie/cast ?person]]
[(associated-with ?person ?movie)
[?movie :movie/director ?person]]]

Output:
Oh snap!
Non-whitelist symbol used in query/args: #{associated-with}. The symbol whitelist is #{sum sequels not= friends tutorial.fns/age .getMonth .getDate count < = > max >= <= movie-year min avg}

Would it be possible to avoid the whitelist when it comes to rules?