1 files changed, 1 insertions, 1 deletions

diff --git a/lisp/files.el b/lisp/files.el
index f6c0b5e9728..01705e3c57a 100644
--- a/lisp/files.el
+++ b/lisp/files.el
@@ -1491,7 +1491,7 @@ we do not remove backup version numbers, only true file version numbers."
                          (length name))
                    (if keep-backup-version
                        (length name)
-                     (or (string-match "\\.~[0-9]+~\\'" name)
+                     (or (string-match "\\.~[0-9.]+~\\'" name)
                          (string-match "~\\'" name)
                          (length name))))))))