diff --git a/config/sway/config.m4 b/config/sway/config.m4
index 025edaa..b0cce38 100644
--- a/config/sway/config.m4
+++ b/config/sway/config.m4
@@ -62,14 +62,13 @@ forloop([i], 1,9, [
 # bindsym $mod+Shift+c reload
 bindsym $mod+Shift+r exec bash -c "sleep 1; swaymsg reload"
 
-# TODO
-# ifelse(hostname, [petalius], [
-# # brightness control
-# bindsym XF86MonBrightnessDown exec light -U 10
-# bindsym XF86MonBrightnessUp exec light -A 10
-# bindsym Shift+XF86MonBrightnessDown exec light -U 1
-# bindsym Shift+XF86MonBrightnessUp exec light -A 1
-# ])
+ifelse(hostname, [petalius], [
+  # brightness control
+  bindsym XF86MonBrightnessDown exec light -U 10
+  bindsym XF86MonBrightnessUp exec light -A 10
+  bindsym Shift+XF86MonBrightnessDown exec light -U 1
+  bindsym Shift+XF86MonBrightnessUp exec light -A 1
+])
 
 # resize window (you can also use the mouse for that)
 mode "resize" {