diff --git a/app/models/p_product_ref.rb b/app/models/p_product_ref.rb
index ce4686a..31ae21e 100644
--- a/app/models/p_product_ref.rb
+++ b/app/models/p_product_ref.rb
@@ -41,7 +41,7 @@ class PProductRef < ApplicationRecord
   
   acts_as_sorting :fields => {
     :id => {:name => "Id", :reorder => true},
-    :p_product_cat => {:name => "Catégorie", :reorder => true},
+    :p_product_cat => {:name => "Catégorie", :reorder => true, :sort_name => "cc_p_product_cat_id",},
     :ref => {:name => "Référence"},
     :cc_name => {:name => "Produit"},
     # :description => {:name => "Description"},
@@ -54,7 +54,7 @@ class PProductRef < ApplicationRecord
     :actions => {:name => "Actions", :reorder => false}
   }
   
-  acts_as_caching :fields => [:sorecop, :deee, :name, :code]
+  acts_as_caching :fields => [:sorecop, :deee, :name, :code, :p_product_cat_id]
   include PgSearch::Model
   pg_search_scope :global_search,
     against: [:ref, :cc_name],