diff --git a/src/usr/local/www/widgets/javascript/thermal_sensors.js b/src/usr/local/www/widgets/javascript/thermal_sensors.js
index 75e143b107..9f8495e172 100644
--- a/src/usr/local/www/widgets/javascript/thermal_sensors.js
+++ b/src/usr/local/www/widgets/javascript/thermal_sensors.js
@@ -233,7 +233,7 @@ function setTempProgress(bar, percent) {
 		barTempM = 0;
 		barTempH = 0;
 	} else if(percent <= criticalTemp) {
-		barTempL = WarningTemp;
+		barTempL = warningTemp;
 		barTempM = percent - warningTemp;
 		barTempH = 0;
 	} else {
@@ -242,6 +242,7 @@ function setTempProgress(bar, percent) {
 		barTempH = percent - criticalTemp;
 	}
 
+
 	$('#' + 'temperaturebarL' + bar).css('width', barTempL + '%').attr('aria-valuenow', barTempL);
 	$('#' + 'temperaturebarM' + bar).css('width', barTempM + '%').attr('aria-valuenow', barTempM);
 	$('#' + 'temperaturebarH' + bar).css('width', barTempH + '%').attr('aria-valuenow', barTempH);