diff --git a/homeassistant/components/shelly/cover.py b/homeassistant/components/shelly/cover.py
index 78aa7606aac..f9bd1b7ce85 100644
--- a/homeassistant/components/shelly/cover.py
+++ b/homeassistant/components/shelly/cover.py
@@ -47,9 +47,9 @@ class ShellyCover(ShellyBlockEntity, CoverEntity):
         """Initialize light."""
         super().__init__(wrapper, block)
         self.control_result: dict[str, Any] | None = None
-        self._supported_features: int = SUPPORT_OPEN | SUPPORT_CLOSE | SUPPORT_STOP
+        self._attr_supported_features: int = SUPPORT_OPEN | SUPPORT_CLOSE | SUPPORT_STOP
         if self.wrapper.device.settings["rollers"][0]["positioning"]:
-            self._supported_features |= SUPPORT_SET_POSITION
+            self._attr_supported_features |= SUPPORT_SET_POSITION
 
     @property
     def is_closed(self) -> bool:
@@ -83,11 +83,6 @@ class ShellyCover(ShellyBlockEntity, CoverEntity):
 
         return self.block.roller == "open"
 
-    @property
-    def supported_features(self) -> int:
-        """Flag supported features."""
-        return self._supported_features
-
     async def async_close_cover(self, **kwargs: Any) -> None:
         """Close cover."""
         self.control_result = await self.set_state(go="close")