diff --git a/packages/arb-node-core/cmd/arb-relay/arb-relay.go b/packages/arb-node-core/cmd/arb-relay/arb-relay.go
index 8a798a86d0..90a84c3865 100644
--- a/packages/arb-node-core/cmd/arb-relay/arb-relay.go
+++ b/packages/arb-node-core/cmd/arb-relay/arb-relay.go
@@ -80,10 +80,10 @@ func startup() error {
 	defer cancelFunc()
 
 	config, err := configuration.ParseRelay()
-	if err != nil || len(config.Feed.Input.URLs) == 0 || config.L2.ChainID == 0 {
+	if err != nil || len(config.Feed.Input.URLs) == 0 || config.Node.ChainID == 0 {
 		fmt.Printf("\n")
 		fmt.Printf("Sample usage: arb-relay --conf=<filename> \n")
-		fmt.Printf("          or: arb-relay --feed.input.url=<feed websocket> --l2.chain-id=<chain id>\n\n")
+		fmt.Printf("          or: arb-relay --feed.input.url=<feed websocket> --node.chain-id=<L2 chain id>\n\n")
 		if err != nil && !strings.Contains(err.Error(), "help requested") {
 			fmt.Printf("%s\n", err.Error())
 		}
@@ -127,17 +127,17 @@ func NewArbRelay(config *configuration.Config) (*ArbRelay, chan error) {
 	confirmedAccumulatorChan := make(chan common.Hash, 10)
 	broadcastClientErrChan := make(chan error, 1)
 	for _, address := range config.Feed.Input.URLs {
-		client := broadcastclient.NewBroadcastClient(address, config.L2.ChainID, nil, config.Feed.Input.Timeout, broadcastClientErrChan)
+		client := broadcastclient.NewBroadcastClient(address, config.Node.ChainID, nil, config.Feed.Input.Timeout, broadcastClientErrChan)
 		client.ConfirmedAccumulatorListener = confirmedAccumulatorChan
 		broadcastClients = append(broadcastClients, client)
 	}
 	arbRelay := &ArbRelay{
-		broadcaster:              broadcaster.NewBroadcaster(&config.Feed.Output, 0),
+		broadcaster:              broadcaster.NewBroadcaster(&config.Feed.Output, config.Node.ChainID),
 		broadcastClients:         broadcastClients,
 		confirmedAccumulatorChan: confirmedAccumulatorChan,
 	}
-	arbRelay.chainIdBig = new(big.Int).SetUint64(config.L2.ChainID)
-	arbRelay.chainIdHex = hexutil.Uint64(config.L2.ChainID)
+	arbRelay.chainIdBig = new(big.Int).SetUint64(config.Node.ChainID)
+	arbRelay.chainIdHex = hexutil.Uint64(config.Node.ChainID)
 	return arbRelay, broadcastClientErrChan
 }
 
diff --git a/packages/arb-rpc-node/rpc/launch.go b/packages/arb-rpc-node/rpc/launch.go
index 3e453729b2..143d935dfc 100644
--- a/packages/arb-rpc-node/rpc/launch.go
+++ b/packages/arb-rpc-node/rpc/launch.go
@@ -152,7 +152,7 @@ func SetupBatcher(
 		if err != nil {
 			return nil, nil, err
 		}
-		feedBroadcaster := broadcaster.NewBroadcaster(&config.Feed.Output, config.L2.ChainID)
+		feedBroadcaster := broadcaster.NewBroadcaster(&config.Feed.Output, config.Node.ChainID)
 		seqBatcher, err := batcher.NewSequencerBatcher(
 			ctx,
 			batcherMode.Core,
diff --git a/packages/arb-util/configuration/configuration.go b/packages/arb-util/configuration/configuration.go
index 070275c6f7..01a9df7172 100644
--- a/packages/arb-util/configuration/configuration.go
+++ b/packages/arb-util/configuration/configuration.go
@@ -449,8 +449,7 @@ type Config struct {
 		URL     string `koanf:"url"`
 	} `koanf:"l1"`
 	L2 struct {
-		ChainID         uint64 `koanf:"chain-id"`
-		DisableUpstream bool   `koanf:"disable-upstream"`
+		DisableUpstream bool `koanf:"disable-upstream"`
 	} `koanf:"l2"`
 	Log           Log        `koanf:"log"`
 	Node          Node       `koanf:"node"`
@@ -882,6 +881,7 @@ func resolveDirectoryNames(out *Config, wallet *Wallet) error {
 func ParseRelay() (*Config, error) {
 	f := flag.NewFlagSet(os.Args[0], flag.ContinueOnError)
 
+	f.Uint64("node.chain-id", 0, "chain id of the arbitrum chain")
 	AddFeedOutputOptions(f)
 
 	k, err := beginCommonParse(f)
@@ -998,7 +998,6 @@ func beginCommonParse(f *flag.FlagSet) (*koanf.Koanf, error) {
 	f.String("log.rpc", "info", "log level for rpc")
 	f.String("log.core", "info", "log level for general arb node logging")
 
-	f.Uint64("l2.chain-id", 0, "if set other than 0, will be used to validate L2 feed connection")
 	f.Bool("l2.disable-upstream", false, "disable feed and transaction forwarding")
 
 	f.Bool("pprof-enable", false, "enable profiling server")