diff --git a/hassio/addons/validate.py b/hassio/addons/validate.py
index fac2a5a14..7dd4f4c88 100644
--- a/hassio/addons/validate.py
+++ b/hassio/addons/validate.py
@@ -61,7 +61,7 @@ SCHEMA_ADDON_CONFIG = vol.Schema({
     vol.Optional(ATTR_URL): vol.Url(),
     vol.Optional(ATTR_ARCH, default=ARCH_ALL): [vol.In(ARCH_ALL)],
     vol.Required(ATTR_STARTUP):
-        vol.All(_migrate_startup, vol.In([STARTUP_ALL])),
+        vol.All(_migrate_startup, vol.In(STARTUP_ALL)),
     vol.Required(ATTR_BOOT):
         vol.In([BOOT_AUTO, BOOT_MANUAL]),
     vol.Optional(ATTR_PORTS): DOCKER_PORTS,