diff --git a/php/AuthSCHClient.class.php b/php/AuthSCHClient.class.php
index 37ab9aaf22af9ad586c3af224a81c561cbe982ec..df0b268711abb3f5062249945e8547df516ccc93 100644
--- a/php/AuthSCHClient.class.php
+++ b/php/AuthSCHClient.class.php
@@ -89,6 +89,7 @@ class AuthSCHClient {
                 throw new Exception ("invalid token data");
             
             $this->tokens = $tokens;
+            $this->tokens->lastUpdate = time();
         }
 
     }