diff --git a/meta-facebook/meta-harma/recipes-phosphor/flash/phosphor-software-manager/bios-update.sh b/meta-facebook/meta-harma/recipes-phosphor/flash/phosphor-software-manager/bios-update.sh
index b21c5d2..25bde6d 100755
--- a/meta-facebook/meta-harma/recipes-phosphor/flash/phosphor-software-manager/bios-update.sh
+++ b/meta-facebook/meta-harma/recipes-phosphor/flash/phosphor-software-manager/bios-update.sh
@@ -31,7 +31,8 @@
 
 #Power off host server.
 echo "Power off host server"
-power_off
+obmcutil poweroff
+
 sleep 15
 if [ "$(power_status)" != "off" ];
 then