diff --git a/testfile b/testfile
index 4c5163e5e..684af4fda 100644
--- a/testfile
+++ b/testfile
@@ -159,3 +159,4 @@ Inbound federation rejects remote attempts to kick local users to rooms
 An event which redacts itself should be ignored
 A pair of events which redact each other should be ignored
 Full state sync includes joined rooms
+A message sent after an initial sync appears in the timeline of an incremental sync.