diff --git a/app/controllers/project_categories_controller.rb b/app/controllers/project_categories_controller.rb
index d521b2cb1..bdcec0883 100644
--- a/app/controllers/project_categories_controller.rb
+++ b/app/controllers/project_categories_controller.rb
@@ -13,6 +13,6 @@ class ProjectCategoriesController < ApplicationController
       projects = Project.visible
     end
     # @category_group_list = projects.joins(:project_category).group(:project_category_id).select("project_category_id, count(*) AS projects_count, project_categories.name")
-    @category_group_list = projects.joins(:project_category).group("project_categories.name", "project_categories.id").size
+    @category_group_list = projects.joins(:project_category).group("project_categories.id", "project_categories.name").size
   end
 end
diff --git a/app/views/project_categories/group_list.json.jbuilder b/app/views/project_categories/group_list.json.jbuilder
index 14f66c29d..07ce8834c 100644
--- a/app/views/project_categories/group_list.json.jbuilder
+++ b/app/views/project_categories/group_list.json.jbuilder
@@ -1,5 +1,5 @@
 json.array! @category_group_list do |category,v|
-  json.id category[1]
-  json.name category[0]
+  json.id category[0]
+  json.name category[1]
   json.projects_count v
 end
\ No newline at end of file