755 ILCS 5/23-5

(755 ILCS 5/23-5) (from Ch. 110 1/2, par. 23-5) Sec. 23-5. Letters revoked when will is produced.) If the will of a decedent is admitted to probate after letters of administration have been issued on his estate, the letters of administration shall be revoked. (Source: P.A. 79-328.)