diff --git a/sale.xml b/sale.xml
index ee328ba..75f0dd2 100644
--- a/sale.xml
+++ b/sale.xml
@@ -42,5 +42,12 @@ copyright notices and license terms. -->
             <field name="model">sale.sale,-1</field>
             <field name="action" ref="act_sale_reconcile"/>
         </record>
+
+        <!-- buttons -->
+        <record model="ir.model.button" id="sale_payment_wizard_button">
+            <field name="name">wizard_sale_payment</field>
+            <field name="string">Pay</field>
+            <field name="model" search="[('model', '=', 'sale.sale')]"/>
+        </record>
     </data>
 </tryton>
diff --git a/view/sale_form.xml b/view/sale_form.xml
index 3a17234..dde2d3b 100644
--- a/view/sale_form.xml
+++ b/view/sale_form.xml
@@ -3,20 +3,13 @@
 The COPYRIGHT file at the top level of this repository contains the full
 copyright notices and license terms. -->
 <data>
-    <xpath
-        expr="/form/notebook/page[@id=&quot;sale&quot;]/group/group[@id=&quot;buttons&quot;]"
-        position="replace_attributes">
+    <xpath expr="/form/notebook/page[@id='sale']/group/group[@id='buttons']" position="replace_attributes">
         <group col="10" colspan="2" id="buttons"/>
     </xpath>
-    <xpath
-        expr="/form/notebook/page[@id=&quot;sale&quot;]/group/group/button[@name=&quot;process&quot;]"
-        position="after">
-        <button name="wizard_sale_payment" string="Pay"
-            icon="tryton-go-next"/>
+    <xpath expr="/form/notebook/page[@id='sale']/group/group/button[@name='process']" position="after">
+        <button name="wizard_sale_payment" icon="tryton-go-next"/>
     </xpath>
-    <xpath
-        expr="/form/notebook/page[@id=&quot;other&quot;]"
-        position="after">
+    <xpath expr="/form/notebook/page[@id='other']" position="after">
         <page string="Payments" col="4" id="payments">
             <field name="payments" colspan="4" readonly="1"/>
             <label name="paid_amount"/>
@@ -25,9 +18,7 @@ copyright notices and license terms. -->
             <field name="residual_amount"/>
         </page>
     </xpath>
-    <xpath
-        expr="/form/notebook/page[@id='other']/field[@name='shop']"
-        position="after">
+    <xpath expr="/form/notebook/page[@id='other']/field[@name='shop']" position="after">
         <label name="sale_device"/>
         <field name="sale_device"/>
     </xpath>