diff --git a/homeassistant/components/braviatv/button.py b/homeassistant/components/braviatv/button.py
index eb3d2d8797f..02f66167c61 100644
--- a/homeassistant/components/braviatv/button.py
+++ b/homeassistant/components/braviatv/button.py
@@ -19,20 +19,13 @@ from .coordinator import BraviaTVCoordinator
 from .entity import BraviaTVEntity
 
 
-@dataclass(frozen=True)
-class BraviaTVButtonDescriptionMixin:
-    """Mixin to describe a Bravia TV Button entity."""
+@dataclass(frozen=True, kw_only=True)
+class BraviaTVButtonDescription(ButtonEntityDescription):
+    """Bravia TV Button description."""
 
     press_action: Callable[[BraviaTVCoordinator], Coroutine]
 
 
-@dataclass(frozen=True)
-class BraviaTVButtonDescription(
-    ButtonEntityDescription, BraviaTVButtonDescriptionMixin
-):
-    """Bravia TV Button description."""
-
-
 BUTTONS: tuple[BraviaTVButtonDescription, ...] = (
     BraviaTVButtonDescription(
         key="reboot",