diff --git a/account_invoice_reference/__openerp__.py b/account_invoice_reference/__openerp__.py
index 5c9b1592..fc12a9ca 100644
--- a/account_invoice_reference/__openerp__.py
+++ b/account_invoice_reference/__openerp__.py
@@ -59,13 +59,15 @@ mandatory fields are:
 * Description
 * Internal Reference ("our reference")
 * External Reference ("customer or supplier reference")
-* Optionally, a technical transaction reference (credit card payment gateways, SEPA, ...)
+* Optionally, a technical transaction reference (credit card payment gateways,
+  SEPA, ...)
 
 Now, on the move lines:
 
 * Name
 * Reference
-* Optionally, a technical transaction reference (added by the module `base_transaction_id`)
+* Optionally, a technical transaction reference (added by the module
+  `base_transaction_id`)
 
 Let's see how the information will be organized with this module.
 
diff --git a/account_invoice_reference/account_move.py b/account_invoice_reference/account_move.py
index f83a085b..56226665 100644
--- a/account_invoice_reference/account_move.py
+++ b/account_invoice_reference/account_move.py
@@ -70,11 +70,12 @@ class account_invoice(orm.Model):
             cr.execute('UPDATE account_move_line SET ref=%s '
                        'WHERE move_id=%s AND (ref is null OR ref = \'\')',
                        (ref, move_id))
-            cr.execute('UPDATE account_analytic_line SET ref=%s '
-                       'FROM account_move_line '
-                       'WHERE account_move_line.move_id = %s '
-                       'AND account_analytic_line.move_id = account_move_line.id',
-                       (ref, move_id))
+            cr.execute(
+                'UPDATE account_analytic_line SET ref=%s '
+                'FROM account_move_line '
+                'WHERE account_move_line.move_id = %s '
+                'AND account_analytic_line.move_id = account_move_line.id',
+                (ref, move_id))
         return True
 
     def create(self, cr, uid, vals, context=None):
@@ -89,7 +90,6 @@ class account_invoice(orm.Model):
             if isinstance(ids, (int, long)):
                 ids = [ids]
             for invoice in self.browse(cr, uid, ids, context=context):
-                local_vals = vals
                 if not invoice.reference:
                     locvals = vals.copy()
                     locvals['reference'] = vals['supplier_invoice_reference']