diff --git a/ChangeLog b/ChangeLog
index d1ac3b235..c619a0b6b 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,10 @@
 2011-12-01  Wolfgang Sourdeau  <wsourdeau@inverse.ca>
 
+	* OpenChange/MAPIStoreFSMessage.m (-subscriberCanReadMessage):
+	returns YES when the message is of class
+	"IPM.Microsoft.ScheduleData.FreeBusy", as a hack until freebusy
+	messages are handled by the backend.
+
 	* OpenChange/MAPIStoreContext.m (_prepareContextClass): now return
 	the context via a pointer parameter. Return a proper "enum
 	mapistore_error" value.
diff --git a/OpenChange/MAPIStoreFSMessage.m b/OpenChange/MAPIStoreFSMessage.m
index 6104cc72a..f02262cee 100644
--- a/OpenChange/MAPIStoreFSMessage.m
+++ b/OpenChange/MAPIStoreFSMessage.m
@@ -83,6 +83,18 @@
   [properties removeAllObjects];
 }
 
+- (BOOL) subscriberCanReadMessage
+{
+  /* This is a HACK until we figure out how to determine a message position in
+     the mailbox hierarchy.... (missing: folderid and role) */
+  NSString *msgClass;
+  
+  msgClass = [[sogoObject properties]
+               objectForKey: MAPIPropertyKey (PR_MESSAGE_CLASS_UNICODE)];
+
+  return [msgClass isEqualToString: @"IPM.Microsoft.ScheduleData.FreeBusy"]; 
+}
+
 - (NSDate *) creationTime
 {
   return [sogoObject creationTime];