diff --git a/roomserver/internal/input/input_events.go b/roomserver/internal/input/input_events.go
index fa24fde33..d709541be 100644
--- a/roomserver/internal/input/input_events.go
+++ b/roomserver/internal/input/input_events.go
@@ -385,6 +385,7 @@ func (r *Inputer) processRoomEvent(
 	}
 
 	// if storing this event results in it being redacted then do so.
+	// we do this after calculating state for this event as we may need to get power levels
 	var (
 		redactedEventID string
 		redactionEvent  *gomatrixserverlib.Event