diff --git a/homeassistant/components/ipp/sensor.py b/homeassistant/components/ipp/sensor.py
index 8e3162ec61d..1aad6ae6b21 100644
--- a/homeassistant/components/ipp/sensor.py
+++ b/homeassistant/components/ipp/sensor.py
@@ -38,19 +38,11 @@ from .coordinator import IPPDataUpdateCoordinator
 from .entity import IPPEntity
 
 
-@dataclass(frozen=True)
-class IPPSensorEntityDescriptionMixin:
-    """Mixin for required keys."""
-
-    value_fn: Callable[[Printer], StateType | datetime]
-
-
-@dataclass(frozen=True)
-class IPPSensorEntityDescription(
-    SensorEntityDescription, IPPSensorEntityDescriptionMixin
-):
+@dataclass(frozen=True, kw_only=True)
+class IPPSensorEntityDescription(SensorEntityDescription):
     """Describes IPP sensor entity."""
 
+    value_fn: Callable[[Printer], StateType | datetime]
     attributes_fn: Callable[[Printer], dict[Any, StateType]] = lambda _: {}