diff --git a/ChangeLog b/ChangeLog
index 52b26e912..8a01509a4 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,8 @@
 2011-11-30  Wolfgang Sourdeau  <wsourdeau@inverse.ca>
 
+	* SoObjects/SOGo/WORequest+SOGo.m (-isICal, -isICal4): updated for
+	iCal 5.
+
 	* SoObjects/Appointments/SOGoAppointmentInboxFolder.m
 	(-davScheduleDefaultCalendarURL): fixed method to return a
 	properly formatted XML chunk.
diff --git a/SoObjects/SOGo/WORequest+SOGo.m b/SoObjects/SOGo/WORequest+SOGo.m
index 31671a019..c7b6b6f83 100644
--- a/SoObjects/SOGo/WORequest+SOGo.m
+++ b/SoObjects/SOGo/WORequest+SOGo.m
@@ -131,7 +131,8 @@
 
 - (BOOL) isICal
 {
-  return [self isAppleDAVWithSubstring: @"Mac OS X/10."];
+  return ([self isAppleDAVWithSubstring: @"Mac OS X/10."]
+          || [self isAppleDAVWithSubstring: @"CoreDAV/"]);
 }
 
 //
@@ -140,8 +141,9 @@
 //
 - (BOOL) isICal4
 {
-  return ([self isAppleDAVWithSubstring: @"iCal/4."] ||
-          [self isAppleDAVWithSubstring: @"iCal/5."]);
+  return ([self isAppleDAVWithSubstring: @"iCal/4."]
+          || [self isAppleDAVWithSubstring: @"iCal/5."]
+          || [self isAppleDAVWithSubstring: @"CoreDAV/"]);
 }