diff --git a/example/ck_tile/18_hstu_attention/hstu_attention_tile_setting_define.hpp b/example/ck_tile/18_hstu_attention/hstu_attention_tile_setting_define.hpp
index 74a3f30ec6..86537a6141 100644
--- a/example/ck_tile/18_hstu_attention/hstu_attention_tile_setting_define.hpp
+++ b/example/ck_tile/18_hstu_attention/hstu_attention_tile_setting_define.hpp
@@ -43,9 +43,9 @@ struct HstuAttentionFwdTileSettingClass
     static_assert(Gemm1WarpTile::size() == 3, "Check failed!");
 
     static constexpr index_t NumGemm0Warps =
-        reduce_on_sequence(Gemm0BlockWarps{}, multiplies{}, number<1>{});
+        reduce_on_sequence(Gemm0BlockWarps{}, multiplies<>{}, number<1>{});
     static constexpr index_t NumGemm1Warps =
-        reduce_on_sequence(Gemm1BlockWarps{}, multiplies{}, number<1>{});
+        reduce_on_sequence(Gemm1BlockWarps{}, multiplies<>{}, number<1>{});
     static_assert(NumGemm1Warps % NumGemm0Warps == 0);
 
     static constexpr index_t NumWarps = max(NumGemm0Warps, NumGemm1Warps);