diff --git a/lisp/progmodes/python.el b/lisp/progmodes/python.el
index abe92dd43dd..26b13afe2ed 100644
--- a/lisp/progmodes/python.el
+++ b/lisp/progmodes/python.el
@@ -658,6 +658,7 @@ point is not in between the indentation."
   (interactive "*p")
   (when (not (python-indent-dedent-line))
     (backward-delete-char-untabify arg)))
+(put 'python-indent-dedent-line-backspace 'delete-selection 'supersede)
 
 (defun python-indent-region (start end)
   "Indent a python region automagically.