diff --git a/pkg/node/peer.go b/pkg/node/peer.go
index 9c8efca..5186538 100644
--- a/pkg/node/peer.go
+++ b/pkg/node/peer.go
@@ -1,7 +1,6 @@
 package node
 
 import (
-	"encoding/json"
 	"os"
 	"path"
 	"regexp"
@@ -641,7 +640,7 @@ func (registry *PeerRegistry) saveNow() error {
 		peers = append(peers, peer)
 	}
 
-	data, err := json.MarshalIndent(peers, "", "  ")
+	data, err := MarshalJSON(peers)
 	if err != nil {
 		return &ProtocolError{Code: ErrCodeOperationFailed, Message: "failed to marshal peers: " + err.Error()}
 	}
@@ -701,7 +700,7 @@ func (registry *PeerRegistry) load() error {
 	}
 
 	var peers []*Peer
-	if err := json.Unmarshal(data, &peers); err != nil {
+	if err := UnmarshalJSON(data, &peers); err != nil {
 		return &ProtocolError{Code: ErrCodeOperationFailed, Message: "failed to unmarshal peers: " + err.Error()}
 	}