diff --git a/app/models/issue.rb b/app/models/issue.rb
index ac3817ff8..a63f05e0a 100644
--- a/app/models/issue.rb
+++ b/app/models/issue.rb
@@ -152,7 +152,7 @@ class Issue < ActiveRecord::Base
   # 更新缺陷
   def act_as_forge_message_update
     unless self.author_id == self.assigned_to_id
-      self.forge_messages << ForgeMessage.new(:user_id => self.assigned_to_id, :project_id => self.project_id, :viewed => false, :update=> true)
+      self.forge_messages << ForgeMessage.new(:user_id => self.assigned_to_id, :project_id => self.project_id, :viewed => false)
     end
   end