diff --git a/publisher.py b/publisher.py
index 121d868..3347909 100644
--- a/publisher.py
+++ b/publisher.py
@@ -2,6 +2,7 @@ import json
 from time import gmtime, strftime, sleep
 import paho.mqtt.client as mqtt
 import logging
+from datetime import datetime
 from enum import Flag, auto
 from typing import Iterable, Iterator, Any, Tuple, Dict, Callable
 
@@ -105,7 +106,7 @@ class Payload:
         if value != self.payload[key]:
             self._changed = True
         self.payload[key] = value
-        self.payload["lastupdated"] = gmtime().isoformat()
+        self.payload["lastupdated"] = datetime(*gmtime()[:6]).isoformat()
 
     @property
     def changed(self) -> bool:
@@ -321,7 +322,7 @@ class Publisher:
             keys.append("rain_intensity")
         if WeatherSensor.RAIN_PROBABILITY in version:
             keys.append("rain_probability")
-        if WeatherSensor.SOLAR_RADIATION_SENSE in version:
+        if WeatherSensor.SOLAR_RADIATION in version:
             keys.append("solar_radiation")
 
         return Payload(self, "weather", keys=keys,