diff --git a/library/think/Session.php b/library/think/Session.php
index ee43bb77..9e317881 100644
--- a/library/think/Session.php
+++ b/library/think/Session.php
@@ -115,6 +115,7 @@ class Session
             self::init();
         } elseif (false === self::$init) {
             session_start();
+            self::$init = true;
         }
     }