diff --git a/example/ck_tile/18_hstu_attention/hstu_attention_fwd_pipeline.hpp b/example/ck_tile/18_hstu_attention/hstu_attention_fwd_pipeline.hpp
index 05288b0d5d..d705f38d36 100644
--- a/example/ck_tile/18_hstu_attention/hstu_attention_fwd_pipeline.hpp
+++ b/example/ck_tile/18_hstu_attention/hstu_attention_fwd_pipeline.hpp
@@ -91,7 +91,7 @@ struct HstuAttentionFwdPipelineQRKSVS
                 if constexpr(kHasBias)
                     return 2;
                 else
-                    return 3;
+                    return 2;
             }
             else if constexpr(kQKHeaddim == 256)
             {