diff --git a/homeassistant/components/homekit/__init__.py b/homeassistant/components/homekit/__init__.py
index 0dfe7336bcf..e6d3a8abff4 100644
--- a/homeassistant/components/homekit/__init__.py
+++ b/homeassistant/components/homekit/__init__.py
@@ -131,6 +131,7 @@ def _has_all_unique_names_and_ports(bridges):
 BRIDGE_SCHEMA = vol.All(
     cv.deprecated(CONF_ZEROCONF_DEFAULT_INTERFACE),
     cv.deprecated(CONF_SAFE_MODE),
+    cv.deprecated(CONF_AUTO_START),
     vol.Schema(
         {
             vol.Optional(CONF_HOMEKIT_MODE, default=DEFAULT_HOMEKIT_MODE): vol.In(