1 files changed, 2 insertions, 1 deletions

diff --git a/lisp/progmodes/executable.el b/lisp/progmodes/executable.el
index e5142571972..092e1a4d578 100644
--- a/lisp/progmodes/executable.el
+++ b/lisp/progmodes/executable.el
@@ -84,8 +84,9 @@ When this is `function', only ask when called non-interactively."
   :group 'executable)
 
 
-(defcustom executable-prefix "#! "
+(defcustom executable-prefix "#!"
   "Interpreter magic number prefix inserted when there was no magic number."
+  :version "24.3"                       ; "#! " -> "#!"
   :type 'string
   :group 'executable)