diff --git a/source3/smbd/notify.c b/source3/smbd/notify.c
index dd4dc1a..995b3f2 100644
--- a/source3/smbd/notify.c
+++ b/source3/smbd/notify.c
@@ -207,8 +207,10 @@ void change_notify_reply(struct smb_request *req,
* coalescing and thus dropping events in notify_marshall_changes.
*/
- qsort(notify_buf->changes, notify_buf->num_changes,
- sizeof(*(notify_buf->changes)), compare_notify_change_events);
+ if(notify_buf->num_changes > 0) {
+ qsort(notify_buf->changes, notify_buf->num_changes,
+ sizeof(*(notify_buf->changes)), compare_notify_change_events);
+ }
if (!notify_marshall_changes(notify_buf->num_changes, max_param,
notify_buf->changes, &blob)) {