Idaho Code § 19-3701
It is not necessary to entitle an affidavit or deposition in the action, whether taken before or after indictment, or upon an appeal; but if made without a title, or with an erroneous title, it is as valid and effectual for every purpose as if it were duly entitled, if it intelligibly refer to the proceeding, indictment or appeal in which it is made.
[(19-3701) Cr. Prac. 1864, sec. 587, p. 285; R.S., R.C., & C.L., sec. 8234; C.S., sec. 9190; I.C.A., sec. 19-3601.]