diff --git a/ChangeLog b/ChangeLog
index 71cf6c265..fdf27b941 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,9 @@
 2011-07-27  Wolfgang Sourdeau  <wsourdeau@inverse.ca>
 
+	* OpenChange/MAPIStoreAppointmentWrapper.m
+	(-getPidLidGlobalObjectId:inMemCtx:): work-around certain buggy
+	events which might now have a "CREATED" element.
+
 	* OpenChange/MAPIStoreContactsMessage.m: commented out
 	"-getPrOabName:inMemCtx:" and "-getPrOabLangid:inMemCtx:" as they
 	seem to be useful only for contact lists.
diff --git a/OpenChange/MAPIStoreAppointmentWrapper.m b/OpenChange/MAPIStoreAppointmentWrapper.m
index 4922064d2..e72621e97 100644
--- a/OpenChange/MAPIStoreAppointmentWrapper.m
+++ b/OpenChange/MAPIStoreAppointmentWrapper.m
@@ -396,6 +396,13 @@ _fillAppointmentRecurrencePattern (struct AppointmentRecurrencePattern *arp,
   /* /FIXME */
 
   creationTime = [event created];
+  if (!creationTime)
+    {
+      [self logWithFormat: @"" __location__ ": event has no 'CREATED' tag -> inventing one"];
+      creationTime = [event lastModified];
+      if (!creationTime)
+        creationTime = [NSCalendarDate date];
+    }
   creationFileTime = [creationTime asFileTimeInMemCtx: NULL];
   [nsData appendBytes: &creationFileTime->dwLowDateTime length: 4];
   [nsData appendBytes: &creationFileTime->dwHighDateTime length: 4];