diff --git a/tests/components/knx/test_telegrams.py b/tests/components/knx/test_telegrams.py
index 964b9ea2a11..d523a0d646a 100644
--- a/tests/components/knx/test_telegrams.py
+++ b/tests/components/knx/test_telegrams.py
@@ -105,9 +105,10 @@ async def test_remove_telegam_history(
 ):
     """Test telegram history removal when configured to size 0."""
     hass_storage["knx/telegrams_history.json"] = {"version": 1, "data": MOCK_TELEGRAMS}
-    knx.mock_config_entry.data = knx.mock_config_entry.data | {
-        CONF_KNX_TELEGRAM_LOG_SIZE: 0
-    }
+    hass.config_entries.async_update_entry(
+        knx.mock_config_entry,
+        data=knx.mock_config_entry.data | {CONF_KNX_TELEGRAM_LOG_SIZE: 0},
+    )
     await knx.setup_integration({})
     # Store.async_remove() is mocked by hass_storage - check that data was removed.
     assert "knx/telegrams_history.json" not in hass_storage