diff --git a/EVS-Client/installation.md b/EVS-Client/installation.md
index dfd5b50f235b863c20a90e0fbe0e633f578a352e..26a88b31e382a2c294529070bbba667141b01173 100644
--- a/EVS-Client/installation.md
+++ b/EVS-Client/installation.md
@@ -33,6 +33,18 @@ Each version of the tool is published in our Nexus repository, download the late
 from [*here*](https://gazelle.ihe.net/nexus/index.html#nexus-search;gav%7E%7EEVSClient-ear%7E%7E%7E). Be careful, this
 released artifact is configured to connect to a database named evs-client-prod and owned by user gazelle.
 
+## Files properties
+
+With the release 5.13.0, EVSClient needs a file to interact with the SSO application. 
+
+The file **EVSClient.properties** has shall be created and save in **/opt/gazelle/cas**. 
+
+The file shall contain the following information : 
+- casServerUrlPrefix = https://yourUrl.com/sso
+- casServerLoginUrl = https://yourUrl.com/sso/login
+- casLogoutUrl = https://yourUrl.com/sso/logout
+- service = https://yourUrl.com/EVSClient
+
 ## Installation
 
  **WARNING** : From version 5.11.1, datasources have been extracted from the **ear**. The template file can be found in /src/main/application/datasource in the source or in the file EVSClient-X.X.X-datasource.zip from the nexus.