diff --git a/powerwall.sh b/powerwall.sh
index c567298b..852ab110 100755
--- a/powerwall.sh
+++ b/powerwall.sh
@@ -47,7 +47,7 @@ CHECKTEMP_SERVICE(){
 			echo $mqtt_message | cut -d'T' -f 3 | cut -d"\"" -f 1 | read temp_t
 			datetime="${temp_d} ${temp_t}"
 			datetime=$(TZ=America/Chicago date -d "datetime" +%s)
-			datetime=`date -d @datetime +'%Y-%m-%d %H:%M:%S'`
+			datetime=`date -d @${datetime} +'%Y-%m-%d %H:%M:%S'`
 			
 			if [ "$temp_c" != "null" ] && [ "$temp_c" != "" ]; then
 				temp_f=`echo "scale=2; $temp_c*1.8 + 32" | bc`