diff --git a/src/Symfony/Component/HttpFoundation/CHANGELOG.md b/src/Symfony/Component/HttpFoundation/CHANGELOG.md
index c83695f7478de..b81fe51fd4c26 100644
--- a/src/Symfony/Component/HttpFoundation/CHANGELOG.md
+++ b/src/Symfony/Component/HttpFoundation/CHANGELOG.md
@@ -4,6 +4,7 @@ CHANGELOG
 2.2.0
 -----
 
+ * [BC BREAK] JsonResponse does not change a top level array to an object when the array is empty anymore in setData()
  * added a IpUtils class to check if an IP belongs to a CIDR
  * added Request::getRealMethod() to get the "real" HTTP method (getMethod() returns the "intended" HTTP method)
  * disabled _method request parameter support by default (call Request::enableHttpMethodParameterOverride() to enable it)