Tex. Code Crim. Proc. art. 26.12
Current with legislation from the 2023 Regular and Special Sessions signed by the Governor as of November 21, 2023.
If the defendant answers that he is not guilty, such plea shall be entered upon the minutes of the court; if he refuses to answer, the plea of not guilty shall in like manner be entered.
Tex. Code Crim. Proc. § 26.12