diff --git a/service/xboard/service.go b/service/xboard/service.go
index 42961dca..81d430aa 100644
--- a/service/xboard/service.go
+++ b/service/xboard/service.go
@@ -626,10 +626,11 @@ func (s *Service) setupNode() error {
 		}
 
 		if strings.Contains(method, "2022") {
-			// SS2022: server_key is used DIRECTLY as PSK (like V2bX core/sing/node.go:251)
-			ssOptions.Password = serverKey
+			// SS2022: server_key must be Base64-encoded to match client URI
+			keyLen := ss2022KeyLength(method)
+			ssOptions.Password = ss2022Key(serverKey, keyLen)
 
-			s.logger.Info("Xboard SS2022 setup. Method: ", method, " ServerKey(PSK): ", serverKey)
+			s.logger.Info("Xboard SS2022 setup. Method: ", method, " Master_PSK: ", ssOptions.Password)
 		} else {
 			// Legacy SS: password-based
 			ssOptions.Password = serverKey