If there are no subversions yet, use 1.

1 files changed, 3 insertions, 1 deletions

diff --git a/lisp/loadup.el b/lisp/loadup.el
index c895e370fc3..6cf138cd794 100644
--- a/lisp/loadup.el
+++ b/lisp/loadup.el
@@ -133,7 +133,9 @@
                              files)))
       (setq emacs-version (format "%s.%d"
                                   emacs-version
-                                  (1+ (apply 'max versions))))))
+                                  (if versions
+                                      (1+ (apply 'max versions))
+                                    1)))))
 
 ;; Note: all compiled Lisp files loaded above this point
 ;; must be among the ones parsed by make-docfile