From a1a2f96a4e2922b8c12deee463f4a4eb0cf357ab Mon Sep 17 00:00:00 2001
From: Javier Eguiluz <javier.eguiluz@gmail.com>
Date: Wed, 18 Oct 2017 18:07:07 +0200
Subject: [PATCH] Mentioned the new case-sensitivity of container parameters

---
 service_container/parameters.rst | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/service_container/parameters.rst b/service_container/parameters.rst
index 232449d79c9..e8872147256 100644
--- a/service_container/parameters.rst
+++ b/service_container/parameters.rst
@@ -170,6 +170,11 @@ accessor methods for parameters::
     To learn more about compiling the container see
     :doc:`/components/dependency_injection/compilation`.
 
+.. versionadded:: 3.4
+    Container parameters are case sensitive starting from Symfony 3.4. In
+    previous Symfony versions, parameters were case insensitive, meaning that
+    ``mailer.transport`` and ``Mailer.Transport`` were considered the same parameter.
+
 .. _component-di-parameters-array:
 
 Array Parameters