os->atoms = ao_lisp_atom_poly(ao_lisp_atoms);
os->globals = ao_lisp_frame_poly(ao_lisp_frame_global);
os->const_checksum = ao_lisp_const_checksum;
- os->const_checksum_inv = ~ao_lisp_const_checksum;
+ os->const_checksum_inv = (uint16_t) ~ao_lisp_const_checksum;
if (ao_lisp_os_save())
return _ao_lisp_atom_t;