diff --git a/product/ERP5Type/DateUtils.py b/product/ERP5Type/DateUtils.py
index 46888925238182c92ac9ff1bb3e01b93ce3454c7..c5c9e94a22c3012148d6baf6b56d78ac093a7bad 100644
--- a/product/ERP5Type/DateUtils.py
+++ b/product/ERP5Type/DateUtils.py
@@ -242,31 +242,36 @@ def getIntervalListBetweenDates(from_date=None, to_date=None,
   else:
     to_inverse = 0
 
-  diff_value = {}
-  for key in keys.keys():
-    if key:
-      diff_value[key] = []
+  diff_value_dict = {}
 
   for current_key in ('year', 'month', 'week', 'day'):
     if keys.get(current_key, None):
       new_date = from_date
       while new_date <= to_date:
-        diff_value[current_key].append(new_date.strftime(format_dict[current_key]))
+        if current_key == 'day':
+          new_strftime = new_date.ISO()
+          new_strftime = new_strftime[:new_strftime.index(' ')]
+          diff_value_dict.setdefault(current_key, []).append(new_strftime)
+        else:
+          diff_value_dict.setdefault(current_key,
+                             []).append(new_date.strftime(format_dict[current_key]))
         if current_key == "week":
           new_date = addToDate(new_date, to_add={'day':7})
         else:
           new_date = addToDate(new_date, to_add={current_key:1})
-      if to_date.strftime(format_dict[current_key]) not in diff_value[current_key]:
-        diff_value[current_key].append(to_date.strftime(format_dict[current_key]))
+      if to_date.strftime(format_dict[current_key]) not in\
+                                                    diff_value_dict[current_key]:
+        diff_value_dict.setdefault(current_key,
+                              []).append(to_date.strftime(format_dict[current_key]))
 
-  returned_value = {}
-  for key, value in diff_value.items():
+  returned_value_dict = {}
+  for key, value in diff_value_dict.iteritems():
     if to_inverse:
       value.reverse()
-      returned_value[key] = value
+      returned_value_dict[key] = value
     else:
-      returned_value[key] = value
-  return returned_value
+      returned_value_dict[key] = value
+  return returned_value_dict
 
 def getMonthAndDaysBetween(from_date=None, to_date=None):
   """
diff --git a/product/ERP5Type/tests/testDateUtils.py b/product/ERP5Type/tests/testDateUtils.py
index dce3eb94b76d61792ba6662c4ffa53a1885f344c..ad4b5e9e167ed1c1b0b74ac8602a8183020dfcbc 100644
--- a/product/ERP5Type/tests/testDateUtils.py
+++ b/product/ERP5Type/tests/testDateUtils.py
@@ -53,6 +53,7 @@ ZopeTestCase.installProduct('ERP5Type')
 
 from DateTime import DateTime
 from Products.ERP5Type.DateUtils import addToDate
+from Products.ERP5Type.DateUtils import getIntervalListBetweenDates
 
 class TestDateUtils(unittest.TestCase):
   """
@@ -124,6 +125,41 @@ class TestDateUtils(unittest.TestCase):
     self.assertEqual(DateTime('2004/09/16 01:23:54 %s' % self.timezone).toZone('UTC').ISO(),
                    addToDate(complex_date, year=0.5).toZone('UTC').ISO())
 
+  def test_interval_list_between_dates(self):
+    from_date = DateTime('2008/10/23')
+    to_date = DateTime('2008/11/03')
+    aggregation_level = 'day'
+    interval_list_dict = getIntervalListBetweenDates(from_date=from_date,
+                                        to_date=to_date,
+                                        keys={'day':True})
+    date_list = interval_list_dict.get('day')
+    self.assertEqual(len(date_list), 12)
+    for index, date in enumerate(date_list):
+      if index == 0:
+        self.assertEqual(date, '2008-10-23')
+      elif index == 1:
+        self.assertEqual(date, '2008-10-24')
+      elif index == 2:
+        self.assertEqual(date, '2008-10-25')
+      elif index == 3:
+        self.assertEqual(date, '2008-10-26')
+      elif index == 4:
+        self.assertEqual(date, '2008-10-27')
+      elif index == 5:
+        self.assertEqual(date, '2008-10-28')
+      elif index == 6:
+        self.assertEqual(date, '2008-10-29')
+      elif index == 7:
+        self.assertEqual(date, '2008-10-30')
+      elif index == 8:
+        self.assertEqual(date, '2008-10-31')
+      elif index == 9:
+        self.assertEqual(date, '2008-11-01')
+      elif index == 10:
+        self.assertEqual(date, '2008-11-02')
+      elif index == 11:
+        self.assertEqual(date, '2008-11-03')
+
 def test_suite():
   suite = unittest.TestSuite()
   suite.addTest(unittest.makeSuite(TestDateUtils))