1 files changed, 1 insertions, 1 deletions

diff --git a/lisp/msb.el b/lisp/msb.el
index 2b5a4c89231..42bb91d909d 100644
--- a/lisp/msb.el
+++ b/lisp/msb.el
@@ -663,7 +663,7 @@ If the argument is left out or nil, then the current buffer is considered."
                      (format
                       "In msb-menu-cond, error for buffer `%s'."
                       (buffer-name buffer)))
-               (error msb--error))))))
+               (error "%s" msb--error))))))
 
 ;; Return (SORT-KEY TITLE . BUFFER-LIST) or nil if the
 ;; buffer-list is empty.