diff --git a/product/ERP5/Document/Item.py b/product/ERP5/Document/Item.py
index 54a7b60dfedbecb5c231035a3cd3f1001ea5c4ca..f5d0658de15cb3b0876f814e6142b89d5f9b165e 100755
--- a/product/ERP5/Document/Item.py
+++ b/product/ERP5/Document/Item.py
@@ -37,7 +37,7 @@ from Products.ERP5Type import Permissions, PropertySheet, Constraint, Interface
 from Products.ERP5Type.XMLObject import XMLObject
 from Products.ERP5Type.DateUtils import addToDate, getClosestDate, getIntervalBetweenDates 
 from Products.ERP5Type.DateUtils import getMonthAndDaysBetween, getRoundedMonthBetween
-from Products.ERP5Type.DateUtils import getMonthFraction, getYearFraction, getBissextilCompliantYearFraction
+from Products.ERP5Type.DateUtils import getMonthFraction, getYearFraction#, getBissextilCompliantYearFraction
 from Products.ERP5Type.DateUtils import same_movement_interval, number_of_months_in_year, centis, millis
 from Products.ERP5.Document.Amount import Amount
 from Products.CMFCore.WorkflowCore import WorkflowMethod