diff --git a/python/cugraph-pyg/cugraph_pyg/tests/mg/test_mg_cugraph_store.py b/python/cugraph-pyg/cugraph_pyg/tests/mg/test_mg_cugraph_store.py
index 0972dd72d62..7047c62250b 100644
--- a/python/cugraph-pyg/cugraph_pyg/tests/mg/test_mg_cugraph_store.py
+++ b/python/cugraph-pyg/cugraph_pyg/tests/mg/test_mg_cugraph_store.py
@@ -385,7 +385,7 @@ def test_get_input_nodes(karate_gnn, dask_client):
 def test_mg_frame_handle(graph, dask_client):
     F, G, N = graph
     cugraph_store = CuGraphStore(F, G, N, multi_gpu=True)
-    assert isinstance(cugraph_store.__graph._plc_graph, dict)
+    assert isinstance(cugraph_store._CuGraphStore__graph._plc_graph, dict)
 
 
 @pytest.mark.skipif(isinstance(torch, MissingModule), reason="torch not available")