diff --git a/inc/power.inc.sh b/inc/power.inc.sh
index 84a29b92..065f0b8f 100644
--- a/inc/power.inc.sh
+++ b/inc/power.inc.sh
@@ -847,7 +847,7 @@ POWERLOGGER_SERVICE(){
 			QRY="INSERT INTO power_data (\`sensorid\`, \`date\`, \`volt\`, \`amp\`, \`watt\`) VALUES ('${PW_POWERSENSOR_ID['ServerRoom-AC']}','${LogDataTime}','${AIRCON_VOLT}','${AIRCON_AMP}','${AIRCON_WATT}')"
 			${mysql_conn} -e "USE servermonitor; ${QRY}"
 			
-			if [ "$(CHECK_HOST ${PW_UPS_IP})" != "false" ]; then
+			if [ "${SVRRM_WATT}" != "" ]; then
 				SVRRM_WATT_WAC=$(expr ${SVRRM_WATT} + ${AIRCON_WATT})
 				SVRRM_AMP_WAC=$(expr ${SVRRM_AMP} + ${AIRCON_AMP})