diff --git a/powerwall.sh b/powerwall.sh
index af888942..b7fdc444 100755
--- a/powerwall.sh
+++ b/powerwall.sh
@@ -539,7 +539,7 @@ CHECKPOWER(){
 		esac
 		shift
 	done
-	
+	[ "${avgdays}" = "0" ] && unset avgdays
 	[ "${avgdays}" != "" ] && avgdayshdr="${avgdays}-Day-Avg" || avgdayshdr=""
 	
 	if [ "${1}" == "" ] || [ "${1}" == "all" ] || [ "${1}" == "mainsite" ]; then