diff --git a/cookbook/ble_itag.rst b/cookbook/ble_itag.rst
index 62ee7e64c..f00270659 100644
--- a/cookbook/ble_itag.rst
+++ b/cookbook/ble_itag.rst
@@ -58,7 +58,7 @@ Configuration example:
         ble_client_id: itag_black
         name: "Black iTag btn"
         service_uuid: 'ffe0'
-        char_uuid: 'ffe1'
+        characteristic_uuid: 'ffe1'
         notify: true
         update_interval: never
         on_notify:
@@ -76,7 +76,7 @@ Configuration example:
         ble_client_id: itag_black
         name: "Black iTag Battery"
         service_uuid: '180f'
-        char_uuid: '2a19'
+        characteristic_uuid: '2a19'
         icon: 'mdi:battery'
         unit_of_measurement: '%'