diff --git a/admin/index.php b/admin/index.php
index a722e1e..998bab7 100644
--- a/admin/index.php
+++ b/admin/index.php
@@ -9,7 +9,8 @@ phpCAS::client(CAS_VERSION_2_0, "cas.insa-toulouse.fr", 443, 'cas', true);
 
 // For production use set the CA certificate that is the issuer of the cert
 // on the CAS server and uncomment the line below
-// phpCAS::setCasServerCACert($cas_server_ca_cert_path);
+//phpCAS::setCasServerCACert($cas_server_ca_cert_path);
+phpCAS::setNoCasServerValidation();
 
 // force CAS authentication
 phpCAS::forceAuthentication();
diff --git a/photos.php b/photos.php
index 108231d..97a5fb5 100644
--- a/photos.php
+++ b/photos.php
@@ -251,7 +251,12 @@ function generatePath($path)
 //CAS
 require_once("phpCAS-1.3.6/CAS.php");
 
+
 phpCAS::client(CAS_VERSION_2_0, "cas.insa-toulouse.fr", 443, 'cas', true);
+
+phpCAS::setNoCasServerValidation();
+// phpCAS::setCasServerCACert($cas_server_ca_cert_path);
+
 phpCAS::forceAuthentication();
 if (isset($_REQUEST['logout'])) {
         phpCAS::logout();