diff --git a/purchase.py b/purchase.py
index fe9cc18369..fda03c6260 100644
--- a/purchase.py
+++ b/purchase.py
@@ -1345,6 +1345,7 @@ ProductSupplier()
 class ProductSupplierPrice(OSV):
     'Product Supplier Price'
     _name = 'purchase.product_supplier.price'
+    _description = __doc__
 
     product_supplier = fields.Many2One('purchase.product_supplier',
             'Supplier', required=True, ondelete='CASCADE')