Good practice

[erlang@REDACTED]

bash$ erl
Erlang (JAM) emulator version 47.4.1

Eshell V47.4.1  (abort with ^G)
1> c(test1file).
./test1file.erl:172: Warning: variable 'Response' exported from ['case']
{ok,test1file}
2>    


>From the file in question:

      case checkvalid(Funcref, Correctlist) of
        false ->
          Response = false;
        Other ->
          Response = invoker(Other, Otherargs)
      end,
      Requester ! Response,  

Obviously the warning warns me of a problem.  This I expect, and welcome.
However, that doesn't mean I want to see warnings; I want to do things
right.  I could just put the message in the case statement, I suppose, but
is there really a canonical way of doing the above without getting the
complaint?