diff --git a/tests/test_core_config.py b/tests/test_core_config.py
index bbf7027e7ef..b20503121fc 100644
--- a/tests/test_core_config.py
+++ b/tests/test_core_config.py
@@ -38,7 +38,7 @@ from homeassistant.core_config import (
     async_process_ha_core_config,
 )
 from homeassistant.helpers import issue_registry as ir
-from homeassistant.helpers.entity import Entity
+from homeassistant.helpers.entity import Entity, EntityPlatformState
 from homeassistant.util.unit_system import (
     METRIC_SYSTEM,
     US_CUSTOMARY_SYSTEM,
@@ -222,6 +222,7 @@ async def _compute_state(hass: HomeAssistant, config: dict[str, Any]) -> State |
     entity.entity_id = "test.test"
     entity.hass = hass
     entity.platform = MockEntityPlatform(hass)
+    entity._platform_state = EntityPlatformState.ADDED
     entity.schedule_update_ha_state()
 
     await hass.async_block_till_done()