diff --git a/esphome/nspanel_esphome_core.yaml b/esphome/nspanel_esphome_core.yaml
index fe2adf6..eda0b23 100644
--- a/esphome/nspanel_esphome_core.yaml
+++ b/esphome/nspanel_esphome_core.yaml
@@ -1706,10 +1706,10 @@ text_sensor:
     internal: false
     disabled_by_default: false
     lambda: |-
-      if !(${pre_built}) {
+      if (!${pre_built}) {
         return {"${name}"};
         } else {
-        byte mac[6];
+        std::byte mac[6];
         WiFi.macAddress(mac);
         String suffix = String(mac[3],HEX) + String(mac[4],HEX) + String(mac[5],HEX);
         return {"${name}-" + suffix};