diff --git a/addons/product/product_view.xml b/addons/product/product_view.xml
index c08bbc412e3..8c19aee026f 100644
--- a/addons/product/product_view.xml
+++ b/addons/product/product_view.xml
@@ -467,11 +467,15 @@
                         </group>
                         <group>
                             <field name="uom_type" on_change="onchange_type(uom_type)"/>
+                            <p attrs="{'invisible':[('uom_type','!=','smaller')]}" colspan="2">
+                                e.g: 1 * (reference unit) = ratio * (this unit)
+                            </p>
+                            <p attrs="{'invisible':[('uom_type','!=','bigger')]}" colspan="2">
+                                e.g: 1 * (this unit) = ratio * (reference unit)
+                            </p>
                             <field name="rounding"/>
                             <field name="factor" attrs="{'invisible':[('uom_type','!=','smaller')]}"/>
-                            <label string="  e.g: 1 * (reference unit) = ratio * (this unit)" attrs="{'invisible':[('uom_type','!=','smaller')]}"/>
                             <field name="factor_inv" attrs="{'invisible':[('uom_type','!=','bigger')]}"/>
-                            <label string="  e.g: 1 * (this unit) = ratio * (reference unit)" attrs="{'invisible':[('uom_type','!=','bigger')]}"/>
                         </group>
                     </group>
                 </form>
diff --git a/addons/stock/stock.py b/addons/stock/stock.py
index 2a03a7befc4..dd303636e76 100644
--- a/addons/stock/stock.py
+++ b/addons/stock/stock.py
@@ -1170,8 +1170,9 @@ class stock_picking(osv.osv):
                 return True
             for move in pick.move_lines:
                 if move.state == 'done':
-                    raise osv.except_osv(_('Error!'), _('You cannot cancel picking because stock move is in done state!'))
+                    raise osv.except_osv(_('Error!'), _('You cannot cancel the picking as some moves have been done. You should cancel the picking lines.'))
         return True
+
     def unlink(self, cr, uid, ids, context=None):
         move_obj = self.pool.get('stock.move')
         if context is None:
@@ -1501,7 +1502,7 @@ class stock_production_lot(osv.osv):
         'product_id': fields.many2one('product.product', 'Product', required=True, domain=[('type', '<>', 'service')]),
         'date': fields.datetime('Creation Date', required=True),
         'stock_available': fields.function(_get_stock, fnct_search=_stock_search, type="float", string="Available", select=True,
-            help="Current quantity of products with this Production Lot Number available in company warehouses",
+            help="Current quantity of products with this Serial Number available in company warehouses",
             digits_compute=dp.get_precision('Product Unit of Measure')),
         'revisions': fields.one2many('stock.production.lot.revision', 'lot_id', 'Revisions'),
         'company_id': fields.many2one('res.company', 'Company', select=True),
@@ -1839,8 +1840,8 @@ class stock_move(osv.osv):
         warning = {}
         if (location.usage == 'internal') and (product_qty > (amount_actual or 0.0)):
             warning = {
-                'title': _('Insufficient Stock in Lot !'),
-                'message': _('You are moving %.2f %s products but only %.2f %s available in this lot.') % (product_qty, uom.name, amount_actual, uom.name)
+                'title': _('Insufficient Stock for Serial Number !'),
+                'message': _('You are moving %.2f %s but only %.2f %s available for this serial number.') % (product_qty, uom.name, amount_actual, uom.name)
             }
         return {'warning': warning}
 
diff --git a/addons/stock/wizard/stock_move_view.xml b/addons/stock/wizard/stock_move_view.xml
index 3df336b5e30..5dc0d0d824c 100644
--- a/addons/stock/wizard/stock_move_view.xml
+++ b/addons/stock/wizard/stock_move_view.xml
@@ -109,7 +109,9 @@
                         </form>
                     </field>
                     <footer>
-                        <button name="split_lot" string="Ok" type="object" icon="gtk-ok" class="oe_highlight"  />
+                        <button name="split_lot" string="Split" type="object" class="oe_highlight"/>
+                        or
+                        <button string="Cancel" class="oe_link" special="cancel"/>
                     </footer>
                 </form>
                 </field>