diff --git a/homeassistant/components/twentemilieu/sensor.py b/homeassistant/components/twentemilieu/sensor.py
index fba10a269f7..1278f6523a5 100644
--- a/homeassistant/components/twentemilieu/sensor.py
+++ b/homeassistant/components/twentemilieu/sensor.py
@@ -21,20 +21,13 @@ from .const import DOMAIN
 from .entity import TwenteMilieuEntity
 
 
-@dataclass
-class TwenteMilieuSensorDescriptionMixin:
-    """Define an entity description mixin."""
+@dataclass(kw_only=True)
+class TwenteMilieuSensorDescription(SensorEntityDescription):
+    """Describe an Twente Milieu sensor."""
 
     waste_type: WasteType
 
 
-@dataclass
-class TwenteMilieuSensorDescription(
-    SensorEntityDescription, TwenteMilieuSensorDescriptionMixin
-):
-    """Describe an Ambient PWS binary sensor."""
-
-
 SENSORS: tuple[TwenteMilieuSensorDescription, ...] = (
     TwenteMilieuSensorDescription(
         key="tree",