diff --git a/HISTORY.txt b/HISTORY.txt
index 3c37851..4874192 100644
--- a/HISTORY.txt
+++ b/HISTORY.txt
@@ -4,13 +4,17 @@ Changelog
 1.2.2 (unreleased)
 ------------------
 
-- Nothing changed yet.
+ * Fixes potential round trip traceback when converting the date(time)
+   values to a date(time) object. Happens if integrated with
+   collective.z3cform.wizard.
+   https://github.com/collective/collective.z3cform.datetimewidget/issues/2
+   [romanofski]
 
 
 1.2.1 (2012-10-10)
 ------------------
 
-*  Make sure DOM is ready before activating the dateinput jQuery plugin.
+ * Make sure DOM is ready before activating the dateinput jQuery plugin.
    This was causing Internet Explorer 7 to fail.
    [rafaelbco]
 
@@ -18,13 +22,13 @@ Changelog
 1.2.0 (2012-06-15)
 ------------------
 
-* Fix day names. Also respect the first day of the week from the current
-  locale. This fixes http://code.google.com/p/dexterity/issues/detail?id=272
-  [davisagli]
+ * Fix day names. Also respect the first day of the week from the current
+   locale. This fixes http://code.google.com/p/dexterity/issues/detail?id=272
+   [davisagli]
 
-* Use viewpagetemplatefile from zope.browserpage. This breaks compatibility
-  with Zope < 2.13 and Plone < 4.1 in order to minimize dependencies.
-  [hannosch]
+ * Use viewpagetemplatefile from zope.browserpage. This breaks compatibility
+   with Zope < 2.13 and Plone < 4.1 in order to minimize dependencies.
+   [hannosch]
 
 1.1.1 (2011-09-24)
 ------------------
diff --git a/README.txt b/README.txt
index c30bbc4..0b7e1ec 100644
--- a/README.txt
+++ b/README.txt
@@ -31,3 +31,4 @@ Contributors
  * David Glick - davisagli
  * Rok Garbas - garbas
  * Carsten Senger - csenger
+ * Róman Joost - romanofski
diff --git a/src/collective/z3cform/datetimewidget/issues.txt b/src/collective/z3cform/datetimewidget/issues.txt
index a8d321f..ca53bbb 100644
--- a/src/collective/z3cform/datetimewidget/issues.txt
+++ b/src/collective/z3cform/datetimewidget/issues.txt
@@ -144,3 +144,71 @@ ISSUE 2
   >>> 'value: new Date("2011/12/31")' in widget.show_jquerytools_dateinput_js()
   True
 
+ISSUE 2 (github)
+----------------
+
+ * status: SOLVED
+ * reported by: Róman Joost | romanofski
+ * assigned to: Róman Joost | romanofski
+
+ The datetime widgets default month is January. The widgets default
+ value is influenced by this default value and may cause a traceback.
+
+  >>> field = zope.schema.Datetime()
+  >>> widget = self.setupWidget(field)
+  >>> widget.ampm = True
+  >>> widget.update()
+  >>> widget.request = self.testrequest(
+  ...     form={'bar-day': '',
+  ...           'bar-month': '1',
+  ...           'bar-year': '',
+  ...           'bar-hour': '00',
+  ...           'bar-min': '00',
+  ...           'bar-ampm': 'PM',
+  ...           'bar-empty-marker': '1',
+  ...           }
+  ...     )
+  >>> widget.update()
+  >>> widget.formatted_value
+  ''
+
+  The required field will not validate the widget value:
+
+  >>> from z3c.form import validator
+  >>> from z3c.form import interfaces
+  >>> field.required
+  True
+  >>> simple = validator.SimpleFieldValidator(
+  ...       None, None, None, field, widget)
+  >>> value = interfaces.IDataConverter(widget).toFieldValue(widget.extract())
+  >>> simple.validate(value)
+  Traceback (most recent call last):
+  RequiredMissing
+
+  The date widget will have the same issue:
+
+  >>> field = zope.schema.Date()
+  >>> widget = self.setupWidget(field)
+  >>> widget.ampm = True
+  >>> widget.update()
+  >>> widget.request = self.testrequest(
+  ...     form={'bar-day': '',
+  ...           'bar-month': '1',
+  ...           'bar-year': '',
+  ...           'bar-empty-marker': '1',
+  ...           }
+  ...     )
+  >>> widget.update()
+  >>> widget.formatted_value
+  ''
+
+  The required field will not validate the widget value:
+
+  >>> field.required
+  True
+  >>> simple = validator.SimpleFieldValidator(
+  ...       None, None, None, field, widget)
+  >>> value = interfaces.IDataConverter(widget).toFieldValue(widget.extract())
+  >>> simple.validate(value)
+  Traceback (most recent call last):
+  RequiredMissing
diff --git a/src/collective/z3cform/datetimewidget/widget_date.py b/src/collective/z3cform/datetimewidget/widget_date.py
index 9b8850b..cd631a3 100644
--- a/src/collective/z3cform/datetimewidget/widget_date.py
+++ b/src/collective/z3cform/datetimewidget/widget_date.py
@@ -82,10 +82,11 @@ def months(self):
 
     @property
     def formatted_value(self):
-        if self.value == ('', '', ''):
+        try:
+            date_value = date(*map(int, self.value))
+        except ValueError:
             return ''
         formatter = self.request.locale.dates.getFormatter("date", "short")
-        date_value = date(*map(int, self.value))
         if date_value.year > 1900:
             return formatter.format(date_value)
         # due to fantastic datetime.strftime we need this hack
diff --git a/src/collective/z3cform/datetimewidget/widget_datetime.py b/src/collective/z3cform/datetimewidget/widget_datetime.py
index 566787c..def9ed3 100644
--- a/src/collective/z3cform/datetimewidget/widget_datetime.py
+++ b/src/collective/z3cform/datetimewidget/widget_datetime.py
@@ -39,10 +39,11 @@ class DatetimeWidget(DateWidget):
 
     @property
     def formatted_value(self):
-        if self.value == ('', '', '', '00', '00'):
+        try:
+            datetime_value = datetime(*map(int, self.value))
+        except ValueError:
             return ''
         formatter = self.request.locale.dates.getFormatter("dateTime", "short")
-        datetime_value = datetime(*map(int, self.value))
         if datetime_value.year > 1900:
             return formatter.format(datetime_value)
         # due to fantastic datetime.strftime we need this hack