(725 ILCS 5/113-5) (from Ch. 38, par. 113-5)
    Sec. 113-5. Plea and Waiver of Jury by Person under 18. No person under the age of 18 years shall be permitted to plead guilty, guilty but mentally ill or waive trial by jury in any case except where the penalty is by fine only unless he is represented by counsel in open court.
(Source: P.A. 82-553.)