diff --git a/homeassistant/components/aranet/sensor.py b/homeassistant/components/aranet/sensor.py
index ad58450384f..bc556209327 100644
--- a/homeassistant/components/aranet/sensor.py
+++ b/homeassistant/components/aranet/sensor.py
@@ -92,7 +92,7 @@ SENSOR_DESCRIPTIONS = {
         key="radiation_rate",
         translation_key="radiation_rate",
         name="Radiation Dose Rate",
-        native_unit_of_measurement="μSv/h",  # b'\xc2\xb5'
+        native_unit_of_measurement="μSv/h",  # b'\xce\xbc'
         state_class=SensorStateClass.MEASUREMENT,
         suggested_display_precision=2,
         scale=0.001,
diff --git a/homeassistant/components/fyta/sensor.py b/homeassistant/components/fyta/sensor.py
index 9de7b39bf33..009804aff68 100644
--- a/homeassistant/components/fyta/sensor.py
+++ b/homeassistant/components/fyta/sensor.py
@@ -105,7 +105,7 @@ SENSORS: Final[list[FytaSensorEntityDescription]] = [
     FytaSensorEntityDescription(
         key="light",
         translation_key="light",
-        native_unit_of_measurement="μmol/s⋅m²",  # b'\xc2\xb5'
+        native_unit_of_measurement="μmol/s⋅m²",  # b'\xce\xbc'
         state_class=SensorStateClass.MEASUREMENT,
         value_fn=lambda plant: plant.light,
     ),