diff --git a/main/inc/lib/security.lib.php b/main/inc/lib/security.lib.php
index 8d3fbcc4a0..f8218e3a40 100755
--- a/main/inc/lib/security.lib.php
+++ b/main/inc/lib/security.lib.php
@@ -121,7 +121,7 @@ class Security
     /**
      * @return string
      */
-    public function getTokenFromSession()
+    public static function getTokenFromSession()
     {
         return Session::read('sec_token');
     }