diff --git a/mcu-rfid-reader.yaml b/mcu-rfid-reader.yaml
index 62f8ebc..b315343 100644
--- a/mcu-rfid-reader.yaml
+++ b/mcu-rfid-reader.yaml
@@ -171,7 +171,7 @@ pn532_i2c:
         id(info)="";
         if (tag.has_ndef_message()) {
           auto message = tag.get_ndef_message();
-          auto records = message->get_records();
+          const auto &records = message->get_records();
           for (auto &record : records) {
             std::string payload = record->get_payload();
             std::string type = record->get_type();