diff --git a/homeassistant/components/somfy/__init__.py b/homeassistant/components/somfy/__init__.py
index fbc76e7c938..7b1430b19c0 100644
--- a/homeassistant/components/somfy/__init__.py
+++ b/homeassistant/components/somfy/__init__.py
@@ -89,6 +89,7 @@ async def async_setup_entry(hass: HomeAssistantType, entry: ConfigEntry):
     )
 
     hass.data[DOMAIN][API] = api.ConfigEntrySomfyApi(hass, entry, implementation)
+    hass.data[DOMAIN][DEVICES] = []
 
     await update_all_devices(hass)