diff --git a/outshine.el b/outshine.el
index 0920493..7f5d1f9 100644
--- a/outshine.el
+++ b/outshine.el
@@ -138,13 +138,13 @@ Used to override any major-mode specific file-local settings")
 
 ;; ** Vars
 
-;; ;; "\C-c" conflicts with other modes like e.g. ESS
-;; (defvar outline-minor-mode-prefix "\C-c"
-;;   "New outline-minor-mode prefix.
-;; Does not really take effect when set in the `outshine' library.
-;; Instead, it must be set in your init file *before* the `outline'
-;; library is loaded, see the installation tips in the comment
-;; section of `outshine'.")
+;; "\C-c" conflicts with other modes like e.g. ESS
+(defvar outline-minor-mode-prefix "\M-#"
+  "New outline-minor-mode prefix.
+Does not really take effect when set in the `outshine' library.
+Instead, it must be set in your init file *before* the `outline'
+library is loaded, see the installation tips in the comment
+section of `outshine'.")
 
 ;; from `outline-magic'
 (defvar outline-promotion-headings nil