struct field *field = tyscm_field_smob_to_field (f_smob);
struct type *type = tyscm_field_smob_containing_type (f_smob);
- if (TYPE_CODE (type) == TYPE_CODE_CLASS)
+ if (TYPE_CODE (type) == TYPE_CODE_STRUCT)
return scm_from_bool (f_smob->field_num < TYPE_N_BASECLASSES (type));
return SCM_BOOL_F;
}