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 5d82a3680c..f8fdf681fc 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
@@ -48,7 +48,7 @@ struct HstuAttentionFwdBlockTile<256>
     using gemm1_warps = ck_tile::sequence<4, 1, 1>;
 };
 
-using HstuAttentionFwdWarpTile1 = ck_tile::sequence<32, 32, 16>;
+using HstuAttentionFwdWarpTile1 = ck_tile::sequence<16, 16, 16>;
 
 template <ck_tile::index_t MaxK>
 struct HstuAttentionFwdShape;