diff --git a/homeassistant/components/switchbot/cover.py b/homeassistant/components/switchbot/cover.py
index e28049eeb95..5582b8b4ed6 100644
--- a/homeassistant/components/switchbot/cover.py
+++ b/homeassistant/components/switchbot/cover.py
@@ -77,6 +77,7 @@ class SwitchBotCurtainEntity(SwitchbotEntity, CoverEntity, RestoreEntity):
         """Initialize the Switchbot."""
         super().__init__(coordinator, idx, mac, name)
         self._attr_unique_id = idx
+        self._attr_is_closed = None
         self._device = device
 
     async def async_added_to_hass(self) -> None: