diff --git a/homeassistant/components/sabnzbd/sensor.py b/homeassistant/components/sabnzbd/sensor.py
index 330a0a8c8d1..d5f19b5e718 100644
--- a/homeassistant/components/sabnzbd/sensor.py
+++ b/homeassistant/components/sabnzbd/sensor.py
@@ -21,18 +21,13 @@ from . import DOMAIN, SIGNAL_SABNZBD_UPDATED
 from .const import DEFAULT_NAME, KEY_API_DATA
 
 
-@dataclass(frozen=True)
-class SabnzbdRequiredKeysMixin:
-    """Mixin for required keys."""
+@dataclass(frozen=True, kw_only=True)
+class SabnzbdSensorEntityDescription(SensorEntityDescription):
+    """Describes Sabnzbd sensor entity."""
 
     key: str
 
 
-@dataclass(frozen=True)
-class SabnzbdSensorEntityDescription(SensorEntityDescription, SabnzbdRequiredKeysMixin):
-    """Describes Sabnzbd sensor entity."""
-
-
 SPEED_KEY = "kbpersec"
 
 SENSOR_TYPES: tuple[SabnzbdSensorEntityDescription, ...] = (