diff --git a/Arduino/CanGrow/CanGrow.ino b/Arduino/CanGrow/CanGrow.ino
index d8c982c..4e5b2f3 100644
--- a/Arduino/CanGrow/CanGrow.ino
+++ b/Arduino/CanGrow/CanGrow.ino
@@ -1921,9 +1921,9 @@ void WEBroot() {
     // todo: auto refresh by api call
     body += "<script>";
     
-    body += "gaugeTemperature.value(";
+    body += "gaugeTemperature.value('";
     body += valTemperature;
-    body += ", 42, ' °C'); ";
+    body += '", 42, ' °C'); ";
     
     body += "gaugeHumidity.value('";
     body += valHumidity;