1 files changed, 1 insertions, 1 deletions

diff --git a/lisp/vc.el b/lisp/vc.el
index 7a0102cd71d..f84b721db73 100644
--- a/lisp/vc.el
+++ b/lisp/vc.el
@@ -679,7 +679,7 @@ If nil, uses `change-log-default-name'."
                      (if (> arg 0) -1
                          (if (< arg 0) 1 0))))
            (setq vc-comment-ring-index
-                 (ring-mod (+ vc-comment-ring-index arg) len))
+                 (mod (+ vc-comment-ring-index arg) len))
            (message "%d" (1+ vc-comment-ring-index))
            (insert (ring-ref vc-comment-ring vc-comment-ring-index))))))