diff --git a/app/controllers/files_controller.rb b/app/controllers/files_controller.rb
index 29350f0f7..12d1f6856 100644
--- a/app/controllers/files_controller.rb
+++ b/app/controllers/files_controller.rb
@@ -522,7 +522,7 @@ class FilesController < ApplicationController
    end
   end
 
-    #查找指定TAG的按条件过滤的资源列表
+    #查找指定TAG的按条件过滤的资源列表，只有课程内搜索有此功能
   def search_tag_attachment
     @q,@tag_name,@order = params[:q],params[:tag_name]
     @is_remote = true