unterminated conditionals

[Kremp, Johannes (Extern)]

i wrote in my 'configure.in':   SWITCH=hello
                                AM_CONDITIONAL(HELLO, test "$SWITCH" =
hello)

and in my 'Makefile.am':                if HELLO
                                ...
                                endif

'automake' told me:             automake: src/Makefile.am: unterminated
conditionals: @HELLO_TRUE@

it would be very nice, if vou could tell me what i can do to solve the
problem.
thanks 
johannes