diff --git a/addons/sale/sale.py b/addons/sale/sale.py
index d172c7bdb2c..119bee779aa 100644
--- a/addons/sale/sale.py
+++ b/addons/sale/sale.py
@@ -1232,6 +1232,18 @@ class sale_order_line(osv.osv):
                 partner_id=partner_id, lang=lang, update_tax=update_tax,
                 date_order=date_order, context=context)
 
+    def onchange_product_uom(self, cursor, user, ids, pricelist, product, qty=0,
+                             uom=False, qty_uos=0, uos=False, name='', partner_id=False,
+                             lang=False, update_tax=True, date_order=False, fiscal_position=False, context=None):
+        context = context or {}
+        lang = lang or ('lang' in context and context['lang'])
+        if not uom:
+            return {'value': {'price_unit': 0.0, 'product_uom' : uom or False}}
+        return self.product_id_change(cursor, user, ids, pricelist, product,
+                                      qty=qty, uom=uom, qty_uos=qty_uos, uos=uos, name=name,
+                                      partner_id=partner_id, lang=lang, update_tax=update_tax,
+                                      date_order=date_order, fiscal_position=fiscal_position, context=context)
+
     def unlink(self, cr, uid, ids, context=None):
         if context is None:
             context = {}
diff --git a/addons/sale/sale_view.xml b/addons/sale/sale_view.xml
index be3ad08b6ee..675a621071f 100644
--- a/addons/sale/sale_view.xml
+++ b/addons/sale/sale_view.xml
@@ -134,7 +134,7 @@
                                                     on_change="product_id_change(parent.pricelist_id,product_id,product_uom_qty,product_uom,product_uos_qty,product_uos,name,parent.partner_id, False, False, parent.date_order, False, parent.fiscal_position, True, context)"/>
                                                 <field name="product_uom" groups="product.group_uom" class="oe_inline oe_no_button"
                                                     context="{'company_id': parent.company_id}"
-                                                    on_change="product_uom_change(parent.pricelist_id,product_id,product_uom_qty,product_uom,product_uos_qty,product_uos,name,parent.partner_id, False, False, parent.date_order, context)"/>
+                                                    on_change="onchange_product_uom(parent.pricelist_id,product_id,product_uom_qty,product_uom,product_uos_qty,product_uos,name,parent.partner_id, False, False, parent.date_order, parent.fiscal_position, context)"/>
                                             </div>
                                             <label for="product_uos_qty" groups="product.group_uos"/>
                                             <div groups="product.group_uos">
@@ -175,7 +175,7 @@
                                         on_change="product_id_change(parent.pricelist_id, product_id, product_uom_qty, product_uom, product_uos_qty, product_uos, name, parent.partner_id, False, False, parent.date_order, False, parent.fiscal_position, True, context)"/>
                                     <field name="product_uom"
                                         context="{'company_id': parent.company_id}"
-                                        on_change="product_uom_change(parent.pricelist_id, product_id, product_uom_qty, product_uom, product_uos_qty, product_uos, name, parent.partner_id, False, False, parent.date_order, context)"
+                                        on_change="onchange_product_uom(parent.pricelist_id, product_id, product_uom_qty, product_uom, product_uos_qty, product_uos, name, parent.partner_id, False, False, parent.date_order, parent.fiscal_position, context)"
                                         groups="product.group_uom" options='{"no_open": True}'/>
                                     <field name="product_uos_qty" groups="product.group_uos" invisible="1"/>
                                     <field name="product_uos" string="UoS" groups="product.group_uos" invisible="1"/>