diff --git a/sytest-whitelist b/sytest-whitelist
index 90c5861f7..e0f1f311e 100644
--- a/sytest-whitelist
+++ b/sytest-whitelist
@@ -475,3 +475,4 @@ GET /capabilities is present and well formed for registered user
 m.room.history_visibility == "joined" allows/forbids appropriately for Guest users
 m.room.history_visibility == "joined" allows/forbids appropriately for Real users
 Users cannot kick users who have already left a room
+A prev_batch token from incremental sync can be used in the v1 messages API