diff --git a/service/xboard/service.go b/service/xboard/service.go
index 057e7968..62bb7e4b 100644
--- a/service/xboard/service.go
+++ b/service/xboard/service.go
@@ -329,6 +329,9 @@ func (s *Service) setupNode() error {
 	case "shadowsocks":
 		method := inner.Cipher
 		serverKey := inner.ServerKey
+		if serverKey == "" {
+			serverKey = s.options.Key
+		}
 		if method == "" {
 			method = "aes-256-gcm"
 		}