diff --git a/modules/purchase_trade/view/purchase_btb_form.xml b/modules/purchase_trade/view/purchase_btb_form.xml
index 1f2761d..b8db5e4 100644
--- a/modules/purchase_trade/view/purchase_btb_form.xml
+++ b/modules/purchase_trade/view/purchase_btb_form.xml
@@ -1,8 +1,8 @@
 <?xml version="1.0"?>
 <!-- This file is part of Tryton.  The COPYRIGHT file at the top level of
 this repository contains the full copyright notices and license terms. -->
-<form col="4">
-    <group col="4" colspan="4" id="hd" yfill="1">
+<form>
+    <group id="hd" yfill="1">
         <label name="party"/>
         <field name="party"/>
         <label name="number"/>
@@ -65,5 +65,5 @@ this repository contains the full copyright notices and license terms. -->
         <button name="process"/>
         <button name="manual_invoice" icon="tryton-forward"/>
     </group> -->
-    <field name="party_lang" invisible="1" colspan="4"/>
+    <field name="party_lang" invisible="1"/>
 </form>
diff --git a/modules/purchase_trade/view/sale_btb_form.xml b/modules/purchase_trade/view/sale_btb_form.xml
index dd0521f..acf6754 100644
--- a/modules/purchase_trade/view/sale_btb_form.xml
+++ b/modules/purchase_trade/view/sale_btb_form.xml
@@ -1,8 +1,8 @@
 <?xml version="1.0"?>
 <!-- This file is part of Tryton.  The COPYRIGHT file at the top level of
 this repository contains the full copyright notices and license terms. -->
-<form col="4">
-    <group col="4" colspan="4" id="hd" yfill="1">
+<form>
+    <group id="hd" yfill="1">
         <label name="party"/>
         <field name="party"/>
         <label name="number"/>
@@ -69,5 +69,5 @@ this repository contains the full copyright notices and license terms. -->
         <button name="manual_invoice" icon="tryton-forward"/>
         <button name="manual_shipment" icon="tryton-forward"/>
     </group> -->
-    <field name="party_lang" invisible="1" colspan="4"/>
+    <field name="party_lang" invisible="1"/>
 </form>