diff --git a/powerwall.sh b/powerwall.sh
index 4a9a025d..5281c99d 100755
--- a/powerwall.sh
+++ b/powerwall.sh
@@ -776,7 +776,7 @@ CHECKPOWER(){
 				elif [ "${HOST_WATTS}" != "0" ]; then
 					[ "${PS1}" == "" ] && PS1="0.0" || PS1=`echo "scale=1; ${PS1}/10" | bc`; (( $(bc <<<"${PS1} < 1") )) && [[ "${PS1}" = *"."* ]] && PS1="0${PS1}"
 					if [ "${PS2}" == "" ]; then
-						PS2="0.0"
+						PS2='0.0'
 					else
 						PS2=`echo "scale=1; ${PS2}/10" | bc`
 						(( $(bc <<<"${PS2} < 1") )) && [[ "${PS2}" = *"."* ]] && PS2="0${PS2}"