diff --git a/powerwall.sh b/powerwall.sh
index 4c43175d..a8f3b934 100755
--- a/powerwall.sh
+++ b/powerwall.sh
@@ -122,7 +122,7 @@ CHECKACV_SERVICE(){
 			echo "($datetime) normal voltage: ${INPUTACV}V"
 			if [ $volt_diff -gt 1 ]; then
 				echo -e "($datetime) Normal voltage detected\nVOLTAGE: ${INPUTACV}V" | mail -s "POWER NOMINAL AGAIN" $email_alert
-			if [ "$last_volt" = "0" ]; then
+			elif [ "$last_volt" = "0" ]; then
 				echo -e "($datetime) Normal voltage detected\nVOLTAGE: ${INPUTACV}V" | mail -s "Power Nominal" $email_alert
 			fi
 			last_volt=1