diff --git a/tests/components/luftdaten/test_init.py b/tests/components/luftdaten/test_init.py
index 83902b19cd7..40e40bcd137 100644
--- a/tests/components/luftdaten/test_init.py
+++ b/tests/components/luftdaten/test_init.py
@@ -66,8 +66,8 @@ async def test_setting_unique_id(
     hass: HomeAssistant, mock_config_entry: MockConfigEntry, mock_luftdaten: MagicMock
 ) -> None:
     """Test we set unique ID if not set yet."""
-    mock_config_entry.unique_id = None
     mock_config_entry.add_to_hass(hass)
+    hass.config_entries.async_update_entry(mock_config_entry, unique_id=None)
 
     await hass.config_entries.async_setup(mock_config_entry.entry_id)
     await hass.async_block_till_done()