diff --git a/public_html/conf/LSauth/config.LSauthMethod_CAS.php b/public_html/conf/LSauth/config.LSauthMethod_CAS.php
index 6e4af98e..f923ae38 100644
--- a/public_html/conf/LSauth/config.LSauthMethod_CAS.php
+++ b/public_html/conf/LSauth/config.LSauthMethod_CAS.php
@@ -56,4 +56,9 @@ define('LSAUTH_CAS_SERVER_NO_SSL_VALIDATION',false);
 // CAS server SSL CA Certificate path
 //define('LSAUTH_CAS_SERVER_SSL_CACERT','');
 
+// phpCAS use cURL to validate ticket from the CAS server.
+// You could have to set SSLVERSION manualy if you have cURL
+// error on ticket validation. Possibles values : 2 or 3
+//define('LSAUTH_CAS_CURL_SSLVERION',3);
+
 ?>
diff --git a/public_html/includes/class/class.LSauthMethod_CAS.php b/public_html/includes/class/class.LSauthMethod_CAS.php
index 9e904b1b..b41256f9 100644
--- a/public_html/includes/class/class.LSauthMethod_CAS.php
+++ b/public_html/includes/class/class.LSauthMethod_CAS.php
@@ -50,6 +50,10 @@ class LSauthMethod_CAS extends LSauthMethod {
 				phpCAS::setCasServerCACert(LSAUTH_CAS_SERVER_SSL_CACERT);
 			}
 
+			if (defined('LSAUTH_CAS_CURL_SSLVERION')) {
+				phpCAS::setExtraCurlOption(CURLOPT_SSLVERSION,LSAUTH_CAS_CURL_SSLVERION);
+			}
+
 			if (LSAUTH_CAS_DISABLE_LOGOUT) {
 				LSauth :: disableLogoutBtn();
 			}