diff --git a/app/controllers/courses_controller.rb b/app/controllers/courses_controller.rb
index fa4f949c9..8ce2bb333 100644
--- a/app/controllers/courses_controller.rb
+++ b/app/controllers/courses_controller.rb
@@ -1320,6 +1320,7 @@ class CoursesController < ApplicationController
   def attahcment_category_list
     @has_course_groups = @course.course_groups.exists?
     @course_modules = @course.attachment_course_modules
+    @no_child = params[:no_child]
   end
 
   def mine
diff --git a/app/views/courses/attahcment_category_list.json.jbuilder b/app/views/courses/attahcment_category_list.json.jbuilder
index 6422308a2..af83890a9 100644
--- a/app/views/courses/attahcment_category_list.json.jbuilder
+++ b/app/views/courses/attahcment_category_list.json.jbuilder
@@ -6,9 +6,11 @@ json.course_modules do
     json.children course_module.first_categories do |category|
       json.title category.name
       json.value category.id
-      json.children category.children do |child|
-        json.title child.name
-        json.value child.id
+      unless @no_child
+        json.children category.children do |child|
+          json.title child.name
+          json.value child.id
+        end
       end
     end
   end