diff --git a/addons/account_anglo_saxon/product_view.xml b/addons/account_anglo_saxon/product_view.xml
index 8697631c394..8187e6fa92b 100644
--- a/addons/account_anglo_saxon/product_view.xml
+++ b/addons/account_anglo_saxon/product_view.xml
@@ -37,7 +37,7 @@
                 <form position="inside">
                     <group col="2" colspan="2">
                         <separator string=" Accounting Property" colspan="2"/>
-                            <field name="property_account_creditor_price_difference_categ" domain="[('type','&lt;&gt;','view'),('type','&lt;&gt;','consolidation')]" attrs="{'readonly':[('purchase_ok','=',0)]}" />
+                            <field name="property_account_creditor_price_difference_categ" domain="[('type','&lt;&gt;','view'),('type','&lt;&gt;','consolidation')]"/>
                     </group>
                 </form>
             </field>