diff --git a/app/controllers/wechats_controller.rb b/app/controllers/wechats_controller.rb
index bdd11d660..15d4ab2e1 100644
--- a/app/controllers/wechats_controller.rb
+++ b/app/controllers/wechats_controller.rb
@@ -13,7 +13,7 @@ class WechatsController < ActionController::Base
       if !uw
         return sendBind()
       else
-        return join_class(content, uw.user)
+        return join_class({invite_code: content}, uw.user)
       end
     rescue => e
       logger.error e.inspect