How to unmark a RadioButton on android? (only one, without radio group)

How to unmark a RadioButtom on android? I click on it and it is marked but I can not uncheck it, try putting a click listener but it did not work for me

 rdbBiopsiaCon.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View view) {
            if (rdbBiopsiaCon.isChecked()){
                rdbBiopsiaCon.setChecked(false);
            }else{
                 rdbBiopsiaCon.setChecked(true);
            }
        }
    });