diff --git a/app/views/subjects/show.json.jbuilder b/app/views/subjects/show.json.jbuilder
index 7febcd789..870d33d40 100644
--- a/app/views/subjects/show.json.jbuilder
+++ b/app/views/subjects/show.json.jbuilder
@@ -12,6 +12,7 @@ json.allow_send @user.logged?
 json.allow_visit @subject.status > 1 || @is_manager
 json.allow_add_member @is_manager
 json.is_creator @is_creator
+json.cover url_to_avatar(@subject)
 
 if @subject.excellent
   json.has_start @subject.has_course_start?