diff --git a/ChangeLog b/ChangeLog
index 6e915207a..c3fa5ac93 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,11 @@
 2012-03-20  Wolfgang Sourdeau  <wsourdeau@inverse.ca>
 
+	* OpenChange/MAPIStoreCalendarMessage.m
+	(-getPidLidAppointmentSequence:inMemCtx:): new getter.
+
+	* OpenChange/MAPIStoreAppointmentWrapper.m
+	(-getPidLidAppointmentSequence:inMemCtx:): new getter.
+
 	* OpenChange/NSDate+MAPIStore.m (-isNever): new accessor for dates
 	occurring in 4500.
 
diff --git a/OpenChange/MAPIStoreAppointmentWrapper.h b/OpenChange/MAPIStoreAppointmentWrapper.h
index 7f68e82e0..efb5ac2a1 100644
--- a/OpenChange/MAPIStoreAppointmentWrapper.h
+++ b/OpenChange/MAPIStoreAppointmentWrapper.h
@@ -97,6 +97,8 @@ extern NSTimeZone *utcTZ;
                  inMemCtx: (TALLOC_CTX *) memCtx;
 - (int) getPidTagStartDate: (void **) data
               inMemCtx: (TALLOC_CTX *) memCtx;
+- (int) getPidLidAppointmentSequence: (void **) data
+                            inMemCtx: (TALLOC_CTX *) memCtx;
 - (int) getPidLidAppointmentStateFlags: (void **) data
                               inMemCtx: (TALLOC_CTX *) memCtx;
 - (int) getPidLidResponseStatus: (void **) data
diff --git a/OpenChange/MAPIStoreAppointmentWrapper.m b/OpenChange/MAPIStoreAppointmentWrapper.m
index 808acfe2b..76d5a0a30 100644
--- a/OpenChange/MAPIStoreAppointmentWrapper.m
+++ b/OpenChange/MAPIStoreAppointmentWrapper.m
@@ -657,6 +657,14 @@ static NSCharacterSet *hexCharacterSet = nil;
   return MAPISTORE_SUCCESS;
 }
 
+- (int) getPidLidAppointmentSequence: (void **) data
+                            inMemCtx: (TALLOC_CTX *) memCtx
+{
+  *data = MAPILongValue (memCtx, [[event sequence] unsignedIntValue]);
+
+  return MAPISTORE_SUCCESS;
+}
+
 - (int) getPidLidAppointmentStateFlags: (void **) data
                               inMemCtx: (TALLOC_CTX *) memCtx
 {
diff --git a/OpenChange/MAPIStoreCalendarMessage.m b/OpenChange/MAPIStoreCalendarMessage.m
index 150838384..15ccb6437 100644
--- a/OpenChange/MAPIStoreCalendarMessage.m
+++ b/OpenChange/MAPIStoreCalendarMessage.m
@@ -166,6 +166,13 @@
   return [[self appointmentWrapper] getPidTagStartDate: data inMemCtx: memCtx];
 }
 
+- (int) getPidLidAppointmentSequence: (void **) data
+                            inMemCtx: (TALLOC_CTX *) memCtx
+{
+  return [[self appointmentWrapper] getPidLidAppointmentSequence: data
+                                                        inMemCtx: memCtx];
+}
+
 - (int) getPidLidAppointmentStateFlags: (void **) data
                               inMemCtx: (TALLOC_CTX *) memCtx
 {