diff --git a/synapse/handlers/sync.py b/synapse/handlers/sync.py
index 49be0bf08771..b2a48c6d1077 100644
--- a/synapse/handlers/sync.py
+++ b/synapse/handlers/sync.py
@@ -357,7 +357,10 @@ async def _wait_for_sync_for_user(
             # we are going to return immediately, so don't bother calling
             # notifier.wait_for_events.
             result: SyncResult = await self.current_sync_for_user(
-                sync_config, since_token, full_state=full_state
+                sync_config,
+                since_token,
+                full_state=full_state,
+                debug_current_token=debug_current_token,
             )
         else:
             # Otherwise, we wait for something to happen and report it to the user.