diff --git a/app/controllers/attachments_controller.rb b/app/controllers/attachments_controller.rb
index 8058f0803..4964bf6a6 100644
--- a/app/controllers/attachments_controller.rb
+++ b/app/controllers/attachments_controller.rb
@@ -67,6 +67,8 @@ class AttachmentsController < ApplicationController
       candown= User.current.member_of_course?(course) || (course.is_public==1 && @attachment.is_public == 1)
     elsif @attachment.container.class.to_s=="HomeworkAttach" && @attachment.container.bid.reward_type == 3
       candown = true
+    else
+      candown = @attachment.is_public == 1
     end
     if candown || User.current.admin?
       @attachment.increment_download