diff --git a/webapp/controller/BaseAuthedController.class.php b/webapp/controller/BaseAuthedController.class.php
index 5441cb9c..97dd4def 100644
--- a/webapp/controller/BaseAuthedController.class.php
+++ b/webapp/controller/BaseAuthedController.class.php
@@ -59,13 +59,6 @@ class BaseAuthedController extends BaseController {
                 die();
             }
         }
-        if (SERVER_ENV == _ONLINE) {
-            $sessionTime = phpcommon\extractSessionTimeFromSessionId($this->_getSessionId());
-            if ($sessionTime < 1656070773) {
-                phpcommon\sendError(1001, 'session expiration');
-                die();
-            }
-        }
     }
 
     protected function updateSession($accountId, $sessionId)