diff --git a/pykolab/xml/event.py b/pykolab/xml/event.py
--- a/pykolab/xml/event.py
+++ b/pykolab/xml/event.py
@@ -122,6 +122,7 @@
         else:
             self.from_ical(from_ical, from_string)
 
+        self.set_created(self.get_created())
         self.uid = self.get_uid()
 
     def _load_attendees(self):
diff --git a/pykolab/xml/todo.py b/pykolab/xml/todo.py
--- a/pykolab/xml/todo.py
+++ b/pykolab/xml/todo.py
@@ -61,6 +61,7 @@
         else:
             self.from_ical(from_ical, from_string)
 
+        self.set_created(self.get_created())
         self.uid = self.get_uid()
 
     def from_ical(self, ical, raw):
diff --git a/tests/unit/test-011-wallace_resources.py b/tests/unit/test-011-wallace_resources.py
--- a/tests/unit/test-011-wallace_resources.py
+++ b/tests/unit/test-011-wallace_resources.py
@@ -117,7 +117,7 @@
 
     def _mock_find_resource(self, address):
         if not 'resource' in address:
-            return None
+            return [];
 
         (prefix, domain) = address.split('@')
         entry_dn = "cn=" + prefix + ",ou=Resources,dc=" + ",dc=".join(domain.split('.'))