diff --git a/homeassistant/components/fritzbox/binary_sensor.py b/homeassistant/components/fritzbox/binary_sensor.py
index dc56bc0473e..5d30362627e 100644
--- a/homeassistant/components/fritzbox/binary_sensor.py
+++ b/homeassistant/components/fritzbox/binary_sensor.py
@@ -49,7 +49,7 @@ BINARY_SENSOR_TYPES: Final[tuple[FritzBinarySensorEntityDescription, ...]] = (
         key="lock",
         translation_key="lock",
         device_class=BinarySensorDeviceClass.LOCK,
-        entity_category=EntityCategory.CONFIG,
+        entity_category=EntityCategory.DIAGNOSTIC,
         suitable=lambda device: device.lock is not None,
         is_on=lambda device: not device.lock,
     ),
@@ -57,7 +57,7 @@ BINARY_SENSOR_TYPES: Final[tuple[FritzBinarySensorEntityDescription, ...]] = (
         key="device_lock",
         translation_key="device_lock",
         device_class=BinarySensorDeviceClass.LOCK,
-        entity_category=EntityCategory.CONFIG,
+        entity_category=EntityCategory.DIAGNOSTIC,
         suitable=lambda device: device.device_lock is not None,
         is_on=lambda device: not device.device_lock,
     ),