diff --git a/tests/python/contrib/test_cutlass.py b/tests/python/contrib/test_cutlass.py
index e041e9fe2725..585b42a21425 100644
--- a/tests/python/contrib/test_cutlass.py
+++ b/tests/python/contrib/test_cutlass.py
@@ -386,7 +386,7 @@ def test_conv2d():
             sm=80,
             atol=1e-5,
             rtol=1e-5,
-            use_cudnn_ref=IC == 3,
+            use_cudnn_ref=(IC == 3),  # The autotvm kernel has an accuracy issue with IC == 3 case
             run_benchmark=False,
         )