diff --git a/cmd/harmony/main.go b/cmd/harmony/main.go
index 70ebaae90..411829c32 100644
--- a/cmd/harmony/main.go
+++ b/cmd/harmony/main.go
@@ -139,12 +139,6 @@ var (
 		"Do not propose view change (testing only)")
 )
 
-const (
-	MainNet = "mainnet"
-	TestNet = "testnet"
-	DevNet  = "devnet"
-)
-
 func initSetup() {
 	// Set port and ip to global config.
 	nodeconfig.GetDefaultConfig().Port = *port
@@ -260,11 +254,11 @@ func createGlobalConfig() *nodeconfig.ConfigType {
 
 	// Set network type
 	switch *networkType {
-	case MainNet:
+	case nodeconfig.Mainnet:
 		nodeConfig.SetNetworkType(nodeconfig.Mainnet)
-	case TestNet:
+	case nodeconfig.Testnet:
 		nodeConfig.SetNetworkType(nodeconfig.Testnet)
-	case DevNet:
+	case nodeconfig.Devnet:
 		nodeConfig.SetNetworkType(nodeconfig.Devnet)
 	default:
 		panic(fmt.Sprintf("invalid network type: %s", *networkType))
@@ -495,7 +489,7 @@ func main() {
 	currentNode.ServiceManagerSetup()
 
 	// RPC for SDK not supported for mainnet.
-	if *networkType != MainNet {
+	if *networkType != nodeconfig.Mainnet {
 		if err := currentNode.StartRPC(*port); err != nil {
 			ctxerror.Warn(utils.GetLogger(), err, "StartRPC failed")
 		}
diff --git a/internal/configs/node/config.go b/internal/configs/node/config.go
index 5b77598de..7ad2b340b 100644
--- a/internal/configs/node/config.go
+++ b/internal/configs/node/config.go
@@ -56,27 +56,15 @@ func (role Role) String() string {
 }
 
 // NetworkType describes the type of Harmony network
-type NetworkType int
+type NetworkType string
 
 // Constants for NetworkType
 const (
-	Mainnet NetworkType = iota
-	Testnet
-	Devnet
+	Mainnet = "mainnet"
+	Testnet = "testnet"
+	Devnet  = "devnet"
 )
 
-func (network NetworkType) String() string {
-	switch network {
-	case Mainnet:
-		return "Mainnet"
-	case Testnet:
-		return "Testnet"
-	case Devnet:
-		return "Devnet"
-	}
-	return "Unknown"
-}
-
 // Network is the type of Harmony network
 var Network = Testnet