diff --git a/tabellio/pcfdb/sync.py b/tabellio/pcfdb/sync.py
index 832572a..92bcaab 100644
--- a/tabellio/pcfdb/sync.py
+++ b/tabellio/pcfdb/sync.py
@@ -4,6 +4,8 @@ import datetime
 import re
 import time
 
+from DateTime.DateTime import DateTime
+
 from zope.i18n.locales import locales
 
 from Products.CMFCore.WorkflowCore import WorkflowException
@@ -766,10 +768,10 @@ class SyncFromPcfDbView(BrowserView):
             object.topics = topics
             if textdefts:
                object.final_version = True
-               object.publication_date = textdefts
+               object.publication_date = DateTime(textdefts.date.isoformat())
             elif textprovts:
                object.final_version = False
-               object.publication_date = textprovts
+               object.publication_date = DateTime(textprovts.date.isoformat())
             if authors:
                 authors = [self.get_author_intid(x) for x in authors]
                 object.authors = [RelationValue(x) for x in authors if x]