diff --git a/homeassistant/components/permobil/sensor.py b/homeassistant/components/permobil/sensor.py
index ce9cf906f37..54d3a61c519 100644
--- a/homeassistant/components/permobil/sensor.py
+++ b/homeassistant/components/permobil/sensor.py
@@ -41,21 +41,14 @@ from .entity import PermobilEntity
 _LOGGER = logging.getLogger(__name__)
 
 
-@dataclass(frozen=True)
-class PermobilRequiredKeysMixin:
-    """Mixin for required keys."""
+@dataclass(frozen=True, kw_only=True)
+class PermobilSensorEntityDescription(SensorEntityDescription):
+    """Describes Permobil sensor entity."""
 
     value_fn: Callable[[Any], float | int]
     available_fn: Callable[[Any], bool]
 
 
-@dataclass(frozen=True)
-class PermobilSensorEntityDescription(
-    SensorEntityDescription, PermobilRequiredKeysMixin
-):
-    """Describes Permobil sensor entity."""
-
-
 SENSOR_DESCRIPTIONS: tuple[PermobilSensorEntityDescription, ...] = (
     PermobilSensorEntityDescription(
         # Current battery as a percentage