diff --git a/addons/product_visible_discount/__openerp__.py b/addons/product_visible_discount/__openerp__.py
index 09cf5ce61fd..81b99b8ac0a 100644
--- a/addons/product_visible_discount/__openerp__.py
+++ b/addons/product_visible_discount/__openerp__.py
@@ -35,7 +35,7 @@ To this end, a new check box named 'Visible Discount' is added to the pricelist
     If the check box is unchecked, we will have on Sale Order and Invoice lines:
     Unit price=225, Discount=0,00, Net price=225.
     """,
-    'depends': ['sale'],
+    'depends': ["sale","purchase"],
     'demo': [],
     'data': ['product_visible_discount_view.xml'],
     'auto_install': False,