diff --git a/example/ck_tile/18_hstu_attention/hstu_attention_fwd_kernel.hpp b/example/ck_tile/18_hstu_attention/hstu_attention_fwd_kernel.hpp
index 0cc9bd9a52..c601f8fb80 100644
--- a/example/ck_tile/18_hstu_attention/hstu_attention_fwd_kernel.hpp
+++ b/example/ck_tile/18_hstu_attention/hstu_attention_fwd_kernel.hpp
@@ -34,8 +34,6 @@ struct HstuAttentionFwdKernel
     static constexpr ck_tile::index_t kBlockSize  = HstuAttentionPipeline::kBlockSize;
     static constexpr ck_tile::index_t kBlockPerCu = HstuAttentionPipeline::kBlockPerCu;
     static_assert(kBlockPerCu > 0);
-    static constexpr ck_tile::index_t kBlockPerCuInput =
-        HstuAttentionPipeline::Problem::kBlockPerCu;
 
     using QKVDataType  = ck_tile::remove_cvref_t<typename HstuAttentionPipeline::QKVDataType>;
     using BiasDataType = ck_tile::remove_cvref_t<typename HstuAttentionPipeline::BiasDataType>;