diff --git a/app/controllers/wechats_controller.rb b/app/controllers/wechats_controller.rb
index a4797d82c..9fb6d0376 100644
--- a/app/controllers/wechats_controller.rb
+++ b/app/controllers/wechats_controller.rb
@@ -420,7 +420,7 @@ class WechatsController < ActionController::Base
       logger.info params
       
       unless (user_binded?(open_id) || params[:state] == "invite_code" || params[:state] == "project_invite_code" ||  params[:state] == "blog_comment" || params[:state] == "course_notice" || params[:state] == "project_discussion" || params[:state] == "course_discussion" || params[:state] == "homework" || params[:state] == "issues" || params[:state] == "journal_for_message")
-        if !(session["login"] != nil && session["login"] == false)
+        if !(session["login"] != nil && session["login"] == false) || session["login"] == nil
           @path = '/login'
         end
         session.delete("login")