diff --git a/pkg/eth/helpers.go b/pkg/eth/helpers.go
index fb072cae..fc09d13c 100644
--- a/pkg/eth/helpers.go
+++ b/pkg/eth/helpers.go
@@ -43,29 +43,30 @@ func ResolveToNodeType(nodeType int) sdtypes.NodeType {
 	}
 }
 
-// ChainConfig returns the appropriate ethereum chain config for the provided chain id
-func ChainConfig(chainID uint64, chainConfigPath string) (*params.ChainConfig, error) {
-	if chainConfigPath != "" {
-		file, err := os.Open(chainConfigPath)
-		if err != nil {
-			utils.Fatalf("Failed to read chain config file: %v", err)
+// LoadConfig loads chain config from json file
+func LoadConfig(chainConfigPath string) (*params.ChainConfig, error) {
+	file, err := os.Open(chainConfigPath)
+	if err != nil {
+		utils.Fatalf("Failed to read chain config file: %v", err)
 
-			return nil, err
-		}
-		defer file.Close()
+		return nil, err
+	}
+	defer file.Close()
 
-		chainConfig := new(params.ChainConfig)
-		if err := json.NewDecoder(file).Decode(chainConfig); err != nil {
-			utils.Fatalf("invalid chain config file: %v", err)
+	chainConfig := new(params.ChainConfig)
+	if err := json.NewDecoder(file).Decode(chainConfig); err != nil {
+		utils.Fatalf("invalid chain config file: %v", err)
 
-			return nil, err
-		}
-
-		log.Infof("Using chain config from %s file. Content %+v", chainConfigPath, chainConfig)
-
-		return chainConfig, nil
+		return nil, err
 	}
 
+	log.Infof("Using chain config from %s file. Content %+v", chainConfigPath, chainConfig)
+
+	return chainConfig, nil
+}
+
+// ChainConfig returns the appropriate ethereum chain config for the provided chain id
+func ChainConfig(chainID uint64) (*params.ChainConfig, error) {
 	switch chainID {
 	case 1:
 		return params.MainnetChainConfig, nil
diff --git a/pkg/serve/config.go b/pkg/serve/config.go
index e02b32e9..7786974c 100644
--- a/pkg/serve/config.go
+++ b/pkg/serve/config.go
@@ -125,7 +125,12 @@ func NewConfig() (*Config, error) {
 			c.RPCGasCap = rpcGasCap
 		}
 	}
-	c.ChainConfig, err = eth.ChainConfig(nodeInfo.ChainID, viper.GetString("ethereum.chainConfig"))
+	chainConfigPath := viper.GetString("ethereum.chainConfig")
+	if chainConfigPath != "" {
+		c.ChainConfig, err = eth.LoadConfig(chainConfigPath)
+	} else {
+		c.ChainConfig, err = eth.ChainConfig(nodeInfo.ChainID)
+	}
 	return c, err
 }