1 files changed, 1 insertions, 0 deletions

diff --git a/lisp/cus-edit.el b/lisp/cus-edit.el
index 951b14f7f05..11b91242cc2 100644
--- a/lisp/cus-edit.el
+++ b/lisp/cus-edit.el
@@ -4023,6 +4023,7 @@ The format is suitable for use with `easy-menu-define'."
   (suppress-keymap custom-mode-map)
   (define-key custom-mode-map " " 'scroll-up)
   (define-key custom-mode-map "\177" 'scroll-down)
+  (define-key custom-mode-map "\C-x\C-s" 'Custom-save)
   (define-key custom-mode-map "q" 'Custom-buffer-done)
   (define-key custom-mode-map "u" 'Custom-goto-parent)
   (define-key custom-mode-map "n" 'widget-forward)