diff --git a/ChargeControl.py b/ChargeControl.py
index 123da73..ad5a69c 100644
--- a/ChargeControl.py
+++ b/ChargeControl.py
@@ -5,6 +5,9 @@ from copy import copy
 from datetime import datetime, timedelta
 from hashlib import md5
 from time import sleep
+
+import pytz
+
 from MyPSACC import MyPSACC
 from MyLogger import logger
 from psa_connectedcar.rest import ApiException
@@ -56,8 +59,8 @@ class ChargeControl:
                     logger.info(f"charging status of {self.vin} is {status}, battery level: {level}")
                     if status == "InProgress":
                         # force update if the car doesn't send info during 10 minutes
-                        last_update = res.energy[0].updated_at
-                        if (datetime.utcnow() - last_update).total_seconds() > 60 * 10:
+                        last_update = res.energy[0].updated_at.replace(tzinfo=pytz.UTC)
+                        if (datetime.utcnow().replace(tzinfo=None) - last_update).total_seconds() > 60 * 10:
                             self.psacc.wakeup(self.vin)
                         if (level >= self.percentage_threshold and self.retry_count < 2) or stop_charge:
                             self.psacc.charge_now(self.vin, False)