diff --git a/homeassistant/components/soma/__init__.py b/homeassistant/components/soma/__init__.py
index 62cdeb11f8b..e90fba62824 100644
--- a/homeassistant/components/soma/__init__.py
+++ b/homeassistant/components/soma/__init__.py
@@ -15,11 +15,14 @@ from .const import API, DOMAIN, HOST, PORT
 DEVICES = "devices"
 
 CONFIG_SCHEMA = vol.Schema(
-    {
-        DOMAIN: vol.Schema(
-            {vol.Required(CONF_HOST): cv.string, vol.Required(CONF_PORT): cv.string}
-        )
-    },
+    vol.All(
+        cv.deprecated(DOMAIN),
+        {
+            DOMAIN: vol.Schema(
+                {vol.Required(CONF_HOST): cv.string, vol.Required(CONF_PORT): cv.string}
+            )
+        },
+    ),
     extra=vol.ALLOW_EXTRA,
 )