diff --git a/addons/sale_analytic_plans/sale_analytic_plans.py b/addons/sale_analytic_plans/sale_analytic_plans.py
index df9eee3e316..b55ca670e07 100644
--- a/addons/sale_analytic_plans/sale_analytic_plans.py
+++ b/addons/sale_analytic_plans/sale_analytic_plans.py
@@ -1,6 +1,6 @@
 # -*- coding: utf-8 -*-
 ##############################################################################
-#    
+#
 #    OpenERP, Open Source Management Solution
 #    Copyright (C) 2004-2010 Tiny SPRL (<http://tiny.be>).
 #
@@ -15,14 +15,15 @@
 #    GNU Affero General Public License for more details.
 #
 #    You should have received a copy of the GNU Affero General Public License
-#    along with this program.  If not, see <http://www.gnu.org/licenses/>.     
+#    along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #
 ##############################################################################
 import time
+from mx import DateTime
+
 import netsvc
 from osv import fields, osv
 import ir
-from mx import DateTime
 from tools import config
 
 class sale_order_line(osv.osv):
@@ -31,13 +32,15 @@ class sale_order_line(osv.osv):
     _columns = {
         'analytics_id':fields.many2one('account.analytic.plan.instance','Analytic Distribution'),
     }
-    def invoice_line_create(self, cr, uid, ids, context={}):
-        create_ids=super(sale_order_line,self).invoice_line_create(cr, uid, ids, context)
-        i=0
+    def invoice_line_create(self, cr, uid, ids, context=None):
+        line_obj = self.pool.get('account.invoice.line')
+        create_ids = super(sale_order_line,self).invoice_line_create(cr, uid, ids, context=context)
+        i = 0
         for line in self.browse(cr, uid, ids, context):
-            self.pool.get('account.invoice.line').write(cr,uid,[create_ids[i]],{'analytics_id':line.analytics_id.id})
-            i=i+1
+            line_obj.write(cr, uid, [create_ids[i]], {'analytics_id':line.analytics_id.id})
+            i = i+1
         return create_ids
-sale_order_line()
-# vim:expandtab:smartindent:tabstop=4:softtabstop=4:shiftwidth=4:
 
+sale_order_line()
+
+# vim:expandtab:smartindent:tabstop=4:softtabstop=4:shiftwidth=4:
\ No newline at end of file