From 2b20e7261ac33261f6fc79d9d1ff9b66fd850e06 Mon Sep 17 00:00:00 2001
From: Otto Winter <otto@otto-winter.com>
Date: Fri, 23 Feb 2018 11:27:00 +0100
Subject: [PATCH] Domain Config Validation

... by rebasing onto #12592
---
 homeassistant/components/light/group.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/homeassistant/components/light/group.py b/homeassistant/components/light/group.py
index c43c2f1ff03..27376eb5f80 100644
--- a/homeassistant/components/light/group.py
+++ b/homeassistant/components/light/group.py
@@ -37,7 +37,7 @@ DEFAULT_NAME = 'Group Light'
 
 PLATFORM_SCHEMA = PLATFORM_SCHEMA.extend({
     vol.Optional(CONF_NAME, default=DEFAULT_NAME): cv.string,
-    vol.Required(CONF_ENTITIES): cv.entity_ids,
+    vol.Required(CONF_ENTITIES): cv.entities_domain('light')
 })
 
 SUPPORT_GROUP_LIGHT = (SUPPORT_BRIGHTNESS | SUPPORT_COLOR_TEMP | SUPPORT_EFFECT