diff --git a/lisp/vc/log-view.el b/lisp/vc/log-view.el
index e47fad8908..f7aeacc273 100644
--- a/lisp/vc/log-view.el
+++ b/lisp/vc/log-view.el
@@ -618,10 +618,11 @@ log-view-diff-common
     ;; When TO and FR are the same, or when point is on a line after
     ;; the last entry, look at the previous revision.
     (when (or (string-equal fr to)
-              (>= (point)
-                  (save-excursion
-                    (goto-char (car fr-entry))
-                    (forward-line))))
+              (and (not (log-view-inside-comment-p end))
+                   (save-excursion
+                     (goto-char end)
+                     (beginning-of-line)
+                     (not (re-search-forward log-view-message-re nil t)))))
       (setq fr (vc-call-backend log-view-vc-backend 'previous-revision nil fr)))
     (vc-diff-internal
      t (list log-view-vc-backend