diff --git a/addons/account/product_view.xml b/addons/account/product_view.xml
index 9c1b0ee39b7..44b9099a00a 100644
--- a/addons/account/product_view.xml
+++ b/addons/account/product_view.xml
@@ -18,7 +18,7 @@
+ attrs="{'readonly':[('sale_ok','=',0)]}"/>