In People v. Reed, 453 Mich 685; 556 NW2d 858 (1996), the defendant and the accomplice were tried jointly before a single jury and the accomplice testified in his own defense. Under these facts, an instruction to the jury to view the accomplice's testimony more cautiously than that of an ordinary witness would have prejudiced the accomplice's defense and would have been error requiring reversal. Id. at 694.