diff --git a/tests/unittests/bases/test_ddp.py b/tests/unittests/bases/test_ddp.py
index 8f1920b8bf2..ad29b0f4c6e 100644
--- a/tests/unittests/bases/test_ddp.py
+++ b/tests/unittests/bases/test_ddp.py
@@ -339,6 +339,7 @@ def _test_sync_with_unequal_size_lists(rank):
 @pytest.mark.DDP
 @pytest.mark.skipif(not _TORCH_GREATER_EQUAL_2_1, reason="test only works on newer torch versions")
 @pytest.mark.skipif(sys.platform == "win32", reason="DDP not available on windows")
+@pytest.mark.skipif(not USE_PYTEST_POOL, reason="DDP pool is not available.")
 def test_sync_with_unequal_size_lists():
     """Test that synchronization of states can be enabled and disabled for compute."""
     pytest.pool.map(_test_sync_with_unequal_size_lists, range(NUM_PROCESSES))