diff --git a/proxy/vless/encoding/addons.go b/proxy/vless/encoding/addons.go
index 389511c97..dbaf4aca3 100644
--- a/proxy/vless/encoding/addons.go
+++ b/proxy/vless/encoding/addons.go
@@ -18,7 +18,7 @@ func EncodeHeaderAddons(buffer *buf.Buffer, addons *Addons) error {
 	case vless.XRO:
 
 		if bytes, err := proto.Marshal(addons); err != nil {
-			newError("failed to marshal addons protobuf value").Base(err)
+			return newError("failed to marshal addons protobuf value").Base(err)
 		} else {
 			if err := buffer.WriteByte(byte(len(bytes))); err != nil {
 				return newError("failed to write addons protobuf length").Base(err)