diff --git a/homeassistant/components/rdw/binary_sensor.py b/homeassistant/components/rdw/binary_sensor.py
index 16a93485b36..96311266db4 100644
--- a/homeassistant/components/rdw/binary_sensor.py
+++ b/homeassistant/components/rdw/binary_sensor.py
@@ -23,20 +23,13 @@ from homeassistant.helpers.update_coordinator import (
 from .const import DOMAIN
 
 
-@dataclass
-class RDWBinarySensorEntityDescriptionMixin:
-    """Mixin for required keys."""
+@dataclass(kw_only=True)
+class RDWBinarySensorEntityDescription(BinarySensorEntityDescription):
+    """Describes RDW binary sensor entity."""
 
     is_on_fn: Callable[[Vehicle], bool | None]
 
 
-@dataclass
-class RDWBinarySensorEntityDescription(
-    BinarySensorEntityDescription, RDWBinarySensorEntityDescriptionMixin
-):
-    """Describes RDW binary sensor entity."""
-
-
 BINARY_SENSORS: tuple[RDWBinarySensorEntityDescription, ...] = (
     RDWBinarySensorEntityDescription(
         key="liability_insured",
diff --git a/homeassistant/components/rdw/sensor.py b/homeassistant/components/rdw/sensor.py
index f330ac16b8e..d25c23c09bd 100644
--- a/homeassistant/components/rdw/sensor.py
+++ b/homeassistant/components/rdw/sensor.py
@@ -24,20 +24,13 @@ from homeassistant.helpers.update_coordinator import (
 from .const import CONF_LICENSE_PLATE, DOMAIN
 
 
-@dataclass
-class RDWSensorEntityDescriptionMixin:
-    """Mixin for required keys."""
+@dataclass(kw_only=True)
+class RDWSensorEntityDescription(SensorEntityDescription):
+    """Describes RDW sensor entity."""
 
     value_fn: Callable[[Vehicle], date | str | float | None]
 
 
-@dataclass
-class RDWSensorEntityDescription(
-    SensorEntityDescription, RDWSensorEntityDescriptionMixin
-):
-    """Describes RDW sensor entity."""
-
-
 SENSORS: tuple[RDWSensorEntityDescription, ...] = (
     RDWSensorEntityDescription(
         key="apk_expiration",