diff --git a/custom_components/ocpp/api.py b/custom_components/ocpp/api.py
index 57479bf6..7bbdcba5 100644
--- a/custom_components/ocpp/api.py
+++ b/custom_components/ocpp/api.py
@@ -197,7 +197,7 @@ def get_supported_features(self, cp_id: str):
         """Return what profiles the charger supports."""
         if cp_id in self.charge_points:
             return self.charge_points[cp_id].supported_features
-        return None
+        return 0
 
     async def set_max_charge_rate_amps(self, cp_id: str, value: float):
         """Set the maximum charge rate in amps."""
diff --git a/tests/test_charge_point.py b/tests/test_charge_point.py
index 082d09c7..a18340b4 100644
--- a/tests/test_charge_point.py
+++ b/tests/test_charge_point.py
@@ -379,7 +379,7 @@ async def send_meter_data(self):
                     "timestamp": "2021-06-21T16:15:09Z",
                     "sampledValue": [
                         {
-                            "value": "1305570.000",
+                            "value": "1305590.000",
                             "context": "Sample.Periodic",
                             "measurand": "Energy.Active.Import.Register",
                             "location": "Outlet",