diff --git a/homeassistant/components/mqtt/cover.py b/homeassistant/components/mqtt/cover.py
index c11cf2dfb85..ae22eb675ac 100644
--- a/homeassistant/components/mqtt/cover.py
+++ b/homeassistant/components/mqtt/cover.py
@@ -13,7 +13,6 @@ from homeassistant.components.cover import (
     ATTR_POSITION,
     ATTR_TILT_POSITION,
     DEVICE_CLASSES_SCHEMA,
-    CoverDeviceClass,
     CoverEntity,
     CoverEntityFeature,
 )
@@ -335,6 +334,25 @@ class MqttCover(MqttEntity, CoverEntity):
             config_attributes=template_config_attributes,
         ).async_render_with_possible_json_value
 
+        self._attr_device_class = self._config.get(CONF_DEVICE_CLASS)
+
+        supported_features = CoverEntityFeature(0)
+        if self._config.get(CONF_COMMAND_TOPIC) is not None:
+            if self._config.get(CONF_PAYLOAD_OPEN) is not None:
+                supported_features |= CoverEntityFeature.OPEN
+            if self._config.get(CONF_PAYLOAD_CLOSE) is not None:
+                supported_features |= CoverEntityFeature.CLOSE
+            if self._config.get(CONF_PAYLOAD_STOP) is not None:
+                supported_features |= CoverEntityFeature.STOP
+
+        if self._config.get(CONF_SET_POSITION_TOPIC) is not None:
+            supported_features |= CoverEntityFeature.SET_POSITION
+
+        if self._config.get(CONF_TILT_COMMAND_TOPIC) is not None:
+            supported_features |= TILT_FEATURES
+
+        self._attr_supported_features = supported_features
+
     def _prepare_subscribe_topics(self) -> None:
         """(Re)Subscribe to topics."""
         topics = {}
@@ -506,31 +524,6 @@ class MqttCover(MqttEntity, CoverEntity):
         """Return current position of cover tilt."""
         return self._tilt_value
 
-    @property
-    def device_class(self) -> CoverDeviceClass | None:
-        """Return the class of this sensor."""
-        return self._config.get(CONF_DEVICE_CLASS)
-
-    @property
-    def supported_features(self) -> CoverEntityFeature:
-        """Flag supported features."""
-        supported_features = CoverEntityFeature(0)
-        if self._config.get(CONF_COMMAND_TOPIC) is not None:
-            if self._config.get(CONF_PAYLOAD_OPEN) is not None:
-                supported_features |= CoverEntityFeature.OPEN
-            if self._config.get(CONF_PAYLOAD_CLOSE) is not None:
-                supported_features |= CoverEntityFeature.CLOSE
-            if self._config.get(CONF_PAYLOAD_STOP) is not None:
-                supported_features |= CoverEntityFeature.STOP
-
-        if self._config.get(CONF_SET_POSITION_TOPIC) is not None:
-            supported_features |= CoverEntityFeature.SET_POSITION
-
-        if self._config.get(CONF_TILT_COMMAND_TOPIC) is not None:
-            supported_features |= TILT_FEATURES
-
-        return supported_features
-
     async def async_open_cover(self, **kwargs: Any) -> None:
         """Move the cover up.