diff --git a/tests/components/knx/conftest.py b/tests/components/knx/conftest.py
index a06206fd9829..f2feaac2f08d 100644
--- a/tests/components/knx/conftest.py
+++ b/tests/components/knx/conftest.py
@@ -29,6 +29,7 @@ from homeassistant.components.knx.const import (
 )
 from homeassistant.components.knx.project import STORAGE_KEY as KNX_PROJECT_STORAGE_KEY
 from homeassistant.core import HomeAssistant
+from homeassistant.helpers.typing import ConfigType
 from homeassistant.setup import async_setup_component
 
 from tests.common import MockConfigEntry, load_fixture
@@ -57,7 +58,9 @@ class KNXTestKit:
         for attribute, value in attributes.items():
             assert test_state.attributes.get(attribute) == value
 
-    async def setup_integration(self, config):
+    async def setup_integration(
+        self, config: ConfigType, add_entry_to_hass: bool = True
+    ) -> None:
         """Create the KNX integration."""
 
         async def patch_xknx_start():
@@ -87,12 +90,14 @@ class KNXTestKit:
             self.xknx = args[0]
             return DEFAULT
 
+        if add_entry_to_hass:
+            self.mock_config_entry.add_to_hass(self.hass)
+
         with patch(
             "xknx.xknx.knx_interface_factory",
             return_value=knx_ip_interface_mock(),
             side_effect=fish_xknx,
         ):
-            self.mock_config_entry.add_to_hass(self.hass)
             await async_setup_component(self.hass, KNX_DOMAIN, {KNX_DOMAIN: config})
             await self.hass.async_block_till_done()
 
diff --git a/tests/components/knx/test_telegrams.py b/tests/components/knx/test_telegrams.py
index d523a0d646af..be24b3cd3ec1 100644
--- a/tests/components/knx/test_telegrams.py
+++ b/tests/components/knx/test_telegrams.py
@@ -105,11 +105,12 @@ 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.add_to_hass(hass)
     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({})
+    await knx.setup_integration({}, add_entry_to_hass=False)
     # Store.async_remove() is mocked by hass_storage - check that data was removed.
     assert "knx/telegrams_history.json" not in hass_storage
     assert not hass.data[DOMAIN].telegrams.recent_telegrams