diff --git a/app/models/tiding.rb b/app/models/tiding.rb
index 0cc335a5..7204abc5 100644
--- a/app/models/tiding.rb
+++ b/app/models/tiding.rb
@@ -254,7 +254,7 @@ class Tiding < ActiveRecord::Base
         elsif self.tiding_type == "Comment"
           container.present? ? ("评论了你" + (container.parent.present? ? "的回复：" : "发布的项目issue：") + message_content(container.notes)) : ""
         else
-          "更新了Issue：#{container.try(:issue).try(:subject)}"
+          container.present? ?  "更新了Issue：#{container.try(:issue).try(:subject)}" : ""
         end
       when 'Issue'
         "指派了Issue给你：" + container.subject