diff --git a/addons/purchase/stock.py b/addons/purchase/stock.py
index 2e5d4cf667a..d4ef2436944 100644
--- a/addons/purchase/stock.py
+++ b/addons/purchase/stock.py
@@ -31,7 +31,9 @@ from osv import osv, fields
 class stock_move(osv.osv):
 	_inherit = 'stock.move'
 	_columns = {
-		'purchase_line_id': fields.many2one('purchase.order.line', 'Purchase Order Line', ondelete='set null', select=True),
+		'purchase_line_id': fields.many2one('purchase.order.line',
+			'Purchase Order Line', ondelete='set null', select=True,
+			readonly=True),
 	}
 	_defaults = {
 		'purchase_line_id': lambda *a:False
@@ -44,7 +46,8 @@ stock_move()
 class stock_picking(osv.osv):
 	_inherit = 'stock.picking'
 	_columns = {
-		'purchase_id': fields.many2one('purchase.order', 'Purchase Order', ondelete='set null', select=True),
+		'purchase_id': fields.many2one('purchase.order', 'Purchase Order',
+			ondelete='set null', select=True, readonly=True),
 	}
 	_defaults = {
 		'purchase_id': lambda *a: False,
diff --git a/addons/purchase/stock_view.xml b/addons/purchase/stock_view.xml
index c8100dbff18..0220311366f 100644
--- a/addons/purchase/stock_view.xml
+++ b/addons/purchase/stock_view.xml
@@ -7,7 +7,7 @@
 		<field name="type">form</field>
 		<field name="inherit_id" ref="stock.view_picking_form"/>
 		<field name="arch" type="xml">
-			<field name="origin" position="after">
+			<field name="active" position="after">
 				<field name="purchase_id"/>
 			</field>
 		</field>
diff --git a/addons/sale/stock_view.xml b/addons/sale/stock_view.xml
index ecac8466547..ae1e2d12641 100644
--- a/addons/sale/stock_view.xml
+++ b/addons/sale/stock_view.xml
@@ -6,7 +6,7 @@
 		<field name="type">form</field>
 		<field name="inherit_id" ref="stock.view_picking_form"/>
 		<field name="arch" type="xml">
-			<field name="origin" position="after">
+			<field name="active" position="after">
 				<field name="sale_id"/>
 			</field>
 		</field>