diff --git a/proxy/main.go b/proxy/main.go
index a8e56bb..baac52b 100644
--- a/proxy/main.go
+++ b/proxy/main.go
@@ -18,7 +18,7 @@ func main() {
 	unsafeLogging := flag.Bool("unsafe-logging", false, "prevent logs from being scrubbed")
 	keepLocalAddresses := flag.Bool("keep-local-addresses", false, "keep local LAN address ICE candidates")
 	relayURL := flag.String("relay", sf.DefaultRelayURL, "websocket relay URL")
-	NATTypeMeasurementIntervalSecond := flag.Uint("nat-type-measurement-interval-second", 0,
+	NATTypeMeasurementIntervalSecond := flag.Uint("nat-retest-seconds", 86400,
 		"the time interval in second before NAT type is retested, 0 disables retest")
 
 	flag.Parse()