diff --git a/tests/helpers/test_event.py b/tests/helpers/test_event.py
index 021437770716..fbacd95ec34a 100644
--- a/tests/helpers/test_event.py
+++ b/tests/helpers/test_event.py
@@ -2020,6 +2020,8 @@ async def test_track_template_result_with_group(hass: HomeAssistant) -> None:
 """
     template_complex = Template(template_complex_str, hass)
 
+    # Run in the event loop; executor jobs may append results out of order
+    @callback
     def specific_run_callback(
         event: Event[EventStateChangedData] | None,
         updates: list[TrackTemplateResult],