diff --git a/app/models/project_category.rb b/app/models/project_category.rb
index 458109e6..67b80299 100644
--- a/app/models/project_category.rb
+++ b/app/models/project_category.rb
@@ -12,6 +12,6 @@
 
 class ProjectCategory < ApplicationRecord
   include Projectable
-  # has_ancestry
+  has_ancestry
 
 end