diff --git a/app/src/gen3plus/infos_g3p.py b/app/src/gen3plus/infos_g3p.py
index 25bb91a..a9843cf 100644
--- a/app/src/gen3plus/infos_g3p.py
+++ b/app/src/gen3plus/infos_g3p.py
@@ -29,7 +29,7 @@ class RegisterMap:
         0x420100d2: {'reg': Register.GRID_VOLTAGE,         'fmt': '!H', 'ratio':  0.1},  # noqa: E501
         0x420100d4: {'reg': Register.GRID_CURRENT,         'fmt': '!H', 'ratio': 0.01},  # noqa: E501
         0x420100d6: {'reg': Register.GRID_FREQUENCY,       'fmt': '!H', 'ratio': 0.01},  # noqa: E501
-        0x420100d8: {'reg': Register.INVERTER_TEMP,        'fmt': '!H', 'eval': 'round((result-32)/1.8, 1)'},  # noqa: E501
+        0x420100d8: {'reg': Register.INVERTER_TEMP,        'fmt': '!H', 'eval': 'result-40'},  # noqa: E501
         # 0x420100d8: {'reg': Register.INVERTER_TEMP,        'fmt': '!H'},                 # noqa: E501
         0x420100dc: {'reg': Register.RATED_POWER,          'fmt': '!H', 'ratio':    1},  # noqa: E501
         0x420100de: {'reg': Register.OUTPUT_POWER,         'fmt': '!H', 'ratio':  0.1},  # noqa: E501
diff --git a/app/tests/test_infos_g3p.py b/app/tests/test_infos_g3p.py
index 850dc67..c5609be 100644
--- a/app/tests/test_infos_g3p.py
+++ b/app/tests/test_infos_g3p.py
@@ -84,7 +84,7 @@ def test_parse_4210(InverterData: bytes):
     assert json.dumps(i.db) == json.dumps({
          "controller": {"Power_On_Time": 2051}, 
          "inverter": {"Serial_Number": "Y17E00000000000E", "Version": "v4.0.10", "Rated_Power": 600, "Max_Designed_Power": 2000, "No_Inputs": 4}, 
-         "env": {"Inverter_Status": 1, "Inverter_Temp": 12.2}, 
+         "env": {"Inverter_Status": 1, "Inverter_Temp": 14}, 
          "grid": {"Voltage": 224.8, "Current": 0.73, "Frequency": 50.05, "Output_Power": 165.8}, 
          "input": {"pv1": {"Voltage": 35.3, "Current": 1.68, "Power": 59.6, "Daily_Generation": 0.04, "Total_Generation": 30.76}, 
                    "pv2": {"Voltage": 34.6, "Current": 1.38, "Power": 48.4, "Daily_Generation": 0.03, "Total_Generation": 27.91},