diff --git a/tests/test_switch.py b/tests/test_switch.py
index 8462122e..c48594ba 100644
--- a/tests/test_switch.py
+++ b/tests/test_switch.py
@@ -793,8 +793,6 @@ async def test_significant_change(hass):
     assert switch._take_over_control
     switch._detect_non_ha_changes = True
     assert switch._detect_non_ha_changes
-    switch._alt_detect_method = False
-    assert not switch._alt_detect_method
 
     # build last service data
     await update(force=False)
@@ -813,10 +811,8 @@ async def test_significant_change(hass):
     assert not switch.turn_on_off_listener.manual_control[ENTITY_LIGHT]
 
     # Assert last_service_data got filled from update()
-    # Assert last_state_change got filled from update()
     await update(force=True)
     assert switch.turn_on_off_listener.last_service_data.get(ENTITY_LIGHT) is not None
-    assert switch.turn_on_off_listener.last_state_change.get(ENTITY_LIGHT) is not None
 
     # Simulate a transition to 255 where the update() is already using brightness 255.
     await set_brightness(240)
@@ -836,7 +832,7 @@ async def test_significant_change(hass):
     switch.hass.helpers.entity_component.async_update_entity = do_nothing
     # On next update ENTITY_LIGHT should be marked as manually controlled
     await update(force=False)
-    assert ENTITY_LIGHT in switch.turn_on_off_listener.last_state_change
+    assert switch.turn_on_off_listener.last_service_data.get(ENTITY_LIGHT) is not None
     assert switch.turn_on_off_listener.manual_control[ENTITY_LIGHT]