diff --git a/config-sample.json b/config-sample.json
index 7ba4adc2711ffacd0e15b8727c15b513782d2a5e..b4992b8d91f664cd90e24b423431c6b4d21b583c 100644
--- a/config-sample.json
+++ b/config-sample.json
@@ -6,6 +6,6 @@
   "home_assistant_pass": null,
   "home_assistant_alarm_entity_id": "alarm_control_panel.shm",
   "buttons": {
-    0: { "mac": "", "label": "" }
+    "0": { "mac": "", "label": "" }
   }
 }