diff --git a/test/examples/CuTeDSL/sm_100a/test_dense_blockscaled_gemm_persistent_prefetch.py b/test/examples/CuTeDSL/sm_100a/test_dense_blockscaled_gemm_persistent_prefetch.py
index 623f9814..825c1697 100644
--- a/test/examples/CuTeDSL/sm_100a/test_dense_blockscaled_gemm_persistent_prefetch.py
+++ b/test/examples/CuTeDSL/sm_100a/test_dense_blockscaled_gemm_persistent_prefetch.py
@@ -47,7 +47,7 @@ from blackwell.dense_blockscaled_gemm_persistent_prefetch import (
 )
 
 import cutlass
-
+pytestmark = [pytest.mark.arch(["100a"])]
 
 @pytest.mark.invalid_case(
     lambda: not Sm100BlockScaledPersistentDenseGemmKernel.can_implement(