diff --git a/homeassistant/components/airvisual_pro/sensor.py b/homeassistant/components/airvisual_pro/sensor.py
index 00c87b02377..2708cc5857d 100644
--- a/homeassistant/components/airvisual_pro/sensor.py
+++ b/homeassistant/components/airvisual_pro/sensor.py
@@ -26,22 +26,15 @@ from . import AirVisualProData, AirVisualProEntity
 from .const import DOMAIN
 
 
-@dataclass(frozen=True)
-class AirVisualProMeasurementKeyMixin:
-    """Define an entity description mixin to include a measurement key."""
+@dataclass(frozen=True, kw_only=True)
+class AirVisualProMeasurementDescription(SensorEntityDescription):
+    """Describe an AirVisual Pro sensor."""
 
     value_fn: Callable[
         [dict[str, Any], dict[str, Any], dict[str, Any], dict[str, Any]], float | int
     ]
 
 
-@dataclass(frozen=True)
-class AirVisualProMeasurementDescription(
-    SensorEntityDescription, AirVisualProMeasurementKeyMixin
-):
-    """Describe an AirVisual Pro sensor."""
-
-
 SENSOR_DESCRIPTIONS = (
     AirVisualProMeasurementDescription(
         key="air_quality_index",