diff --git a/tests/v1/kv_connector/unit/test_nixl_connector_hma.py b/tests/v1/kv_connector/unit/test_nixl_connector_hma.py
index 3f1038ff65..f9cacabdd4 100644
--- a/tests/v1/kv_connector/unit/test_nixl_connector_hma.py
+++ b/tests/v1/kv_connector/unit/test_nixl_connector_hma.py
@@ -85,6 +85,7 @@ def region_pull_worker():
         remote_physical_blocks_per_logical=2,
     )
     worker.tp_mappings = {"P": TPMapping(((0,), (0,)), (0,), {0: 0}, 0)}
+    worker._transfer_layer_group_ids = ()
     worker._mixed_mem_types = True
     worker.src_xfer_handles_by_block_size = {64: 1}
     worker._dram_src_handles_by_block_size = {64: 2}