/* If thing is an immediate then this is a cons. */
if (is_lisp_pointer(thing)
|| (fixnump(thing))
- || (widetag_of(thing) == BASE_CHAR_WIDETAG)
+ || (widetag_of(thing) == CHARACTER_WIDETAG)
|| (widetag_of(thing) == UNBOUND_MARKER_WIDETAG))
count = 2;
else