diff --git a/stumpwm/.stumpwm.d/init.lisp b/stumpwm/.stumpwm.d/init.lisp
index a1d4737..6d78647 100644
--- a/stumpwm/.stumpwm.d/init.lisp
+++ b/stumpwm/.stumpwm.d/init.lisp
@@ -199,8 +199,8 @@
 (define-key stumpwm:*root-map* (kbd "C-q") "quit-confirm")
 (define-key stumpwm:*root-map* (kbd "T") "wal")
 (define-key *top-map* (kbd "M-TAB") "pull-hidden-next")
-(define-key *top-map* (kbd "XF86MonBrightnessDown") "exec light -U 5")
-(define-key *top-map* (kbd "XF86MonBrightnessUp") "exec light -A 5")
+(define-key *top-map* (kbd "XF86MonBrightnessDown") "exec xbacklight -dec 10")
+(define-key *top-map* (kbd "XF86MonBrightnessUp") "exec xbacklight -inc 10")
 (define-key *top-map* (kbd "XF86AudioRaiseVolume") "exec pavolume volup")
 (define-key *top-map* (kbd "XF86AudioLowerVolume") "exec pavolume voldown")
 (define-key *top-map* (kbd "XF86AudioMute") "exec pavolume mutetoggle")