From e632a47772d1f48b3b46d62b3a9ea7b89613fcff Mon Sep 17 00:00:00 2001
From: Pascal Vizeli <pascal.vizeli@syshack.ch>
Date: Wed, 7 Sep 2016 17:19:19 +0200
Subject: [PATCH] protect service data for changes in calls (#3249)

* protect service data for changes in calls

* change handling

* move MappingProxyType to service call
---
 homeassistant/core.py | 1 +
 1 file changed, 1 insertion(+)

diff --git a/homeassistant/core.py b/homeassistant/core.py
index 6ecb27d875c..03f9658325f 100644
--- a/homeassistant/core.py
+++ b/homeassistant/core.py
@@ -581,6 +581,7 @@ class Service(object):
         try:
             if self.schema:
                 call.data = self.schema(call.data)
+            call.data = MappingProxyType(call.data)
 
             self.func(call)
         except vol.MultipleInvalid as ex: