diff --git a/lisp/init-editing-utils.el b/lisp/init-editing-utils.el
index 4c907dccc6..ca3d546918 100644
--- a/lisp/init-editing-utils.el
+++ b/lisp/init-editing-utils.el
@@ -191,8 +191,6 @@
 ;; use M-S-up and M-S-down, which will work even in lisp modes.
 
 (require-package 'move-dup)
-(global-set-key [M-up] 'move-dup-move-lines-up)
-(global-set-key [M-down] 'move-dup-move-lines-down)
 (global-set-key [M-S-up] 'move-dup-move-lines-up)
 (global-set-key [M-S-down] 'move-dup-move-lines-down)