diff --git a/tests/script/test_determine_jobs.py b/tests/script/test_determine_jobs.py
index ad658cd53c..e73c134151 100644
--- a/tests/script/test_determine_jobs.py
+++ b/tests/script/test_determine_jobs.py
@@ -152,14 +152,14 @@ def test_main_all_tests_should_run(
     assert output["memory_impact"]["should_run"] == "false"
     assert output["cpp_unit_tests_run_all"] is False
     assert output["cpp_unit_tests_components"] == ["wifi", "api", "sensor"]
-    # component_test_batches should be present and be a list of lists
+    # component_test_batches should be present and be a list of space-separated strings
     assert "component_test_batches" in output
     assert isinstance(output["component_test_batches"], list)
-    # Each batch should be a list of component names
+    # Each batch should be a space-separated string of component names
     for batch in output["component_test_batches"]:
-        assert isinstance(batch, list)
-        for component in batch:
-            assert isinstance(component, str)
+        assert isinstance(batch, str)
+        # Should contain at least one component (no empty batches)
+        assert len(batch) > 0
 
 
 def test_main_no_tests_should_run(