diff --git a/config/corne.conf b/config/corne.conf
index 9000311..29cc02d 100644
--- a/config/corne.conf
+++ b/config/corne.conf
@@ -7,6 +7,6 @@ CONFIG_ZMK_DISPLAY=y
 CONFIG_BT_CTLR_TX_PWR_PLUS_8=y
 
 CONFIG_ZMK_IDLE_TIMEOUT=180000
-# CONFIG_ZMK_SLEEP=y # deep sleep
-# CONFIG_ZMK_IDLE_SLEEP_TIMEOUT=900000 # deep sleep timeout
+CONFIG_ZMK_SLEEP=y
+CONFIG_ZMK_IDLE_SLEEP_TIMEOUT=1800000
 CONFIG_ZMK_PM_SOFT_OFF=y