This is a correction document (Department of Error) to the article by Kishan AU et al. published in Lancet 2026; 407: 1059–71 on the use and duration of hormone therapy with postoperative radiotherapy in recurrent prostate cancer. In Figure 3, the heading of the fourth column should have read “Years (95% CI)”. The second sentence in the caption for Figure 3 should have read “Subgroup with or without long-term therapy includes data from RTOG 9601 and…”. The title of Figure 4A should have been “Treatment effect: radiotherapy + hormone therapy vs radiotherapy”. The title in Figure 4B should have been the same as in Figure 4A: “Treatment effect: radiotherapy + hormone therapy vs radiotherapy”. The title of Figure 4D should have read "Treatment effect: radiotherapy + short-term hormone therapy vs radiotherapy".[1]