diff --git a/custom_components/ble_monitor/__init__.py b/custom_components/ble_monitor/__init__.py
index 9fd57787..34d8347c 100644
--- a/custom_components/ble_monitor/__init__.py
+++ b/custom_components/ble_monitor/__init__.py
@@ -412,7 +412,7 @@ async def async_cleanup_entries_service(hass: HomeAssistant, service_data):
 
     # Remove devices that don't belong to any entity
     for device_id in devices_to_be_removed:
-        if len(ent_registry.async_entries_for_device(ent_registry, device_id)) == 0:
+        if len(entity_registry.async_entries_for_device(ent_registry, device_id)) == 0:
             dev_registry.async_remove_device(device_id)
             _LOGGER.debug("device %s will be deleted", device_id)
 
diff --git a/requirements_test.txt b/requirements_test.txt
index dd30594a..ce4b33f0 100644
--- a/requirements_test.txt
+++ b/requirements_test.txt
@@ -1,4 +1,4 @@
-pytest-homeassistant-custom-component==0.13.119
+pytest-homeassistant-custom-component==0.13.133
 
 # BLE montitor requirements
 pycryptodomex==3.19.1