diff --git a/node/service.go b/node/service.go
index 55062a5004..d8ca95a372 100644
--- a/node/service.go
+++ b/node/service.go
@@ -17,6 +17,7 @@
 package node
 
 import (
+	"crypto/ecdsa"
 	"reflect"
 
 	"github.com/ethereum/go-ethereum/accounts"
@@ -67,6 +68,11 @@ func (ctx *ServiceContext) Service(service interface{}) error {
 	return ErrServiceUnknown
 }
 
+// NodeKey returns node key from config
+func (ctx *ServiceContext) NodeKey() *ecdsa.PrivateKey {
+	return ctx.config.NodeKey()
+}
+
 // ServiceConstructor is the function signature of the constructors needed to be
 // registered for service instantiation.
 type ServiceConstructor func(ctx *ServiceContext) (Service, error)