diff --git a/powerwall.sh b/powerwall.sh
index d4d25bb4..71707523 100755
--- a/powerwall.sh
+++ b/powerwall.sh
@@ -432,7 +432,7 @@ Previous Temp: ${last_temp[${SENSOR}]}'F"
 							else
 								wait=300
 							fi
-							if [ ${lastinsert} -ge ${wait} ]; then
+							if [ ${lastinsert} -ge ${wait} ] && [ "${PW_SENSOR_ID[${SENSORa}]}" != "" ]; then
 								if [ "${PW_SENSOR_TYPE[${SENSORa}]}" == "esxi" ]; then
 									entityid=($(${mysql_conn} -e "SELECT id FROM servermonitor.entities WHERE BINARY name='${vSENSOR// /_}' AND sensorid='${PW_SENSOR_ID[${SENSORa}]}'"))
 									if [ "${entityid[1]}" == "" ]; then