diff --git a/app/models/product_order.rb b/app/models/product_order.rb
index 6fce051..b9add78 100755
--- a/app/models/product_order.rb
+++ b/app/models/product_order.rb
@@ -1,11 +1,11 @@
 class ProductOrder < ActiveRecord::Base
   belongs_to :reseaux
   
-  has_many :payments, :as => :element
+  has_many :payments, :as => :element, :dependent => :destroy
   
-  has_many :product_order_products
+  has_many :product_order_products, :dependent => :destroy
   
-  has_many :product_order_documents
+  has_many :product_order_documents, :dependent => :destroy
   
   
   
@@ -14,7 +14,7 @@ class ProductOrder < ActiveRecord::Base
   
   has_many :fournisseurs, :through => :sub_products
 
-  has_many :product_order_payments
+  has_many :product_order_payments, :dependent => :destroy
   belongs_to :product_order_payment_ok, :class_name => "ProductOrderPayment"
 
   belongs_to :particular_bill, :class_name => "Particular"