Mo. Rev. Stat. § 534.320
534.320 Verdict may be corrected in matters of form.
534.320. Verdict may be corrected in matters of form. — No verdict shall be set aside for informality, but the judge may in the presence of the jury, correct the same in matters of form, changing no matter of substance.
(RSMo 1939 § 2848, A.L. 1945 p. 1089, A.L. 1978 H.B. 1634) Prior revisions: 1929 § 2462; 1919 § 3010; 1909 § 7672 Effective 1-02-79