diff --git a/example/ck_tile/18_hstu_attention/hstu_attention_fwd_setting.hpp b/example/ck_tile/18_hstu_attention/hstu_attention_fwd_setting.hpp
index c842df341b..5d82a3680c 100644
--- a/example/ck_tile/18_hstu_attention/hstu_attention_fwd_setting.hpp
+++ b/example/ck_tile/18_hstu_attention/hstu_attention_fwd_setting.hpp
@@ -35,7 +35,7 @@ struct HstuAttentionFwdBlockTile<64>
 template <>
 struct HstuAttentionFwdBlockTile<128>
 {
-    using type        = ck_tile::sequence<128, 128, 32, 128, 32, 128>;
+    using type        = ck_tile::sequence<128, 64, 32, 128, 32, 128>;
     using gemm0_warps = ck_tile::sequence<4, 1, 1>;
     using gemm1_warps = ck_tile::sequence<4, 1, 1>;
 };