Error in src.conf(5)?

[Christer Solskogen]

src.conf(5) says:
"The values of variables are ignored regardless of their setting; even 
if they would be set to ``FALSE'' or ``NO''.  Just the existence of an
option will cause it to be honoured by make(1)."

So in my /etc/jail-src.conf I have a couple of options like this:

WITHOUT_ACPI
WITHOUT_ASSERT_DEBUG
WITHOUT_ATM
WITHOUT_AUDIT
WITHOUT_AUTHPF
WITHOUT_BLUETOOTH

Running "make installworld SRCCONF=/etc/jail-src.conf" gives me the 
following errors:

"/etc/jail-src.conf", line 1: Need an operator
"/etc/jail-src.conf", line 2: Need an operator
"/etc/jail-src.conf", line 3: Need an operator
"/etc/jail-src.conf", line 4: Need an operator
"/etc/jail-src.conf", line 5: Need an operator
"/etc/jail-src.conf", line 6: Need an operator

Do I really need something like "WITHOUT_ACPI=TRUE" ?

-- 
chs