diff --git a/desktop/settings.ini b/desktop/settings.ini
index 17652e0..612a650 100644
--- a/desktop/settings.ini
+++ b/desktop/settings.ini
@@ -18,7 +18,7 @@ sleep-inactive-battery-type='nothing'
 # [省電力オプション] 自動サスペンド (電源接続時)
 sleep-inactive-ac-type='nothing'
 # [電源ボタン] 電源ボタンの挙動
-power-button-action='suspend'
+power-button-action='poweroff'
 
 # [電源管理] > [省電力オプション]
 [org/gnome/desktop/session]