diff --git a/models/peer/peer.go b/models/peer/peer.go
index ad51414..2ac5958 100644
--- a/models/peer/peer.go
+++ b/models/peer/peer.go
@@ -27,9 +27,10 @@ const (
 	BLACKLIST
 	PENDING_PARTNER
 	MASTER
+	NANO
 )
 
-var path = []string{"unknown", "self", "partner", "blacklist", "partner", "master"}
+var path = []string{"unknown", "self", "partner", "blacklist", "partner", "master", "nano"}
 
 func GetRelationPath(str string) int {
 	for i, p := range path {