diff --git a/product.py b/product.py
index d9b1c63b43..316db2f03b 100644
--- a/product.py
+++ b/product.py
@@ -132,4 +132,12 @@ class Product(OSV):
 
         return res
 
+    def copy(self, cursor, user, product_id, default=None, context=None):
+        if default is None:
+            default = {}
+        default = default.copy()
+        default['products'] = False
+        return super(Product, self).copy(cursor, user, product_id,
+                default=default, context=context)
+
 Product()