diff --git a/lass/5pkgs/xmonad-lass.nix b/lass/5pkgs/xmonad-lass.nix
index debcf97a5..cf8eaf058 100644
--- a/lass/5pkgs/xmonad-lass.nix
+++ b/lass/5pkgs/xmonad-lass.nix
@@ -116,8 +116,8 @@ myKeyMap =
     , ("M4-p", spawn "${pkgs.pass}/bin/passmenu --type")
     , ("<XF86AudioRaiseVolume>", spawn "${pkgs.pulseaudioLight.out}/bin/pactl -- set-sink-volume @DEFAULT_SINK@ +4%")
     , ("<XF86AudioLowerVolume>", spawn "${pkgs.pulseaudioLight.out}/bin/pactl -- set-sink-volume @DEFAULT_SINK@ -4%")
-    , ("<XF86MonBrightnessDown>", spawn "${pkgs.xorg.xbacklight}/bin/xbacklight -dec 10%")
-    , ("<XF86MonBrightnessUp>",   spawn "${pkgs.xorg.xbacklight}/bin/xbacklight -inc 10")
+    , ("<XF86MonBrightnessDown>", spawn "${pkgs.xorg.xbacklight}/bin/xbacklight -time 0 -dec 1%")
+    , ("<XF86MonBrightnessUp>",   spawn "${pkgs.xorg.xbacklight}/bin/xbacklight -time 0 -inc 1")
     , ("<XF86Launch1>", gridselectWorkspace gridConfig W.view)
     , ("M4-C-k", spawn "${pkgs.xorg.xkill}/bin/xkill")