diff --git a/homeassistant/components/zone/__init__.py b/homeassistant/components/zone/__init__.py
index 91a1338b671..33ac15853f4 100644
--- a/homeassistant/components/zone/__init__.py
+++ b/homeassistant/components/zone/__init__.py
@@ -228,7 +228,7 @@ async def async_setup(hass: HomeAssistant, config: Dict) -> bool:
         conf = await component.async_prepare_reload(skip_reset=True)
         if conf is None:
             return
-        await yaml_collection.async_load(conf[DOMAIN])
+        await yaml_collection.async_load(conf.get(DOMAIN, []))
 
     service.async_register_admin_service(
         hass,