diff --git a/sample-lnd.conf b/sample-lnd.conf
index 0e6c70a4b..56fba9d67 100644
--- a/sample-lnd.conf
+++ b/sample-lnd.conf
@@ -1023,6 +1023,9 @@ litecoin.node=ltcd
 ; (default: 1000)
 ; routerrpc.maxmchistory=900
 
+; The time interval with which the MC store state is flushed to the DB.
+; routerrpc.mcflushinterval=1m
+
 ; Path to the router macaroon
 ; routerrpc.routermacaroonpath=~/.lnd/data/chain/bitcoin/simnet/router.macaroon