diff --git a/include/ck_tile/ops/flatmm/block/block_flatmm_asmem_bsmem_creg_v1.hpp b/include/ck_tile/ops/flatmm/block/block_flatmm_asmem_bsmem_creg_v1.hpp
index e81ab7e008..0833a9e5e6 100644
--- a/include/ck_tile/ops/flatmm/block/block_flatmm_asmem_bsmem_creg_v1.hpp
+++ b/include/ck_tile/ops/flatmm/block/block_flatmm_asmem_bsmem_creg_v1.hpp
@@ -71,10 +71,6 @@ struct BlockFlatmmASmemBSmemCRegV1
                                    const ABlockWindow& a_block_window,
                                    BFlatBlockTensor& b_warp_tensor) const
     {
-        // static_assert(std::is_same_v<ADataType, typename ABlockWindow::DataType> &&
-        //                   std::is_same_v<BDataType, typename BFlatBlockWindow::DataType> &&
-        //                   std::is_same_v<CDataType, typename CBlockTensor::DataType>,
-        //               "wrong!");
         constexpr index_t MPerBlock = ABlockWindow{}.get_window_lengths()[number<0>{}];
         constexpr index_t KPerBlock = ABlockWindow{}.get_window_lengths()[number<1>{}];
 
@@ -94,9 +90,6 @@ struct BlockFlatmmASmemBSmemCRegV1
         constexpr index_t MPerBlockPerIter = MPerBlock / MIterPerWarp;
         constexpr index_t KPerBlockPerIter = KPerBlock / KIterPerWarp;
 
-        // constexpr index_t NFlatPerBlockPerIter = BlockGemmShape::flatNPerWarp;
-        // constexpr index_t KFlatPerBlockPerIter = BlockGemmShape::flatKPerWarp;
-
         const index_t iMWarp = get_warp_id() / NWarp;
 
         // construct A-warp-window
@@ -118,24 +111,6 @@ struct BlockFlatmmASmemBSmemCRegV1
             });
         });
 
-        // construct Bflat-warp-window
-        // auto b_flat_warp_windows_tmp = b_flat_block_window;
-        // statically_indexed_array<
-        //     statically_indexed_array<decltype(b_flat_warp_windows_tmp), KIterPerWarp>,
-        //     NIterPerWarp>
-        //     b_flat_warp_windows;
-        // static_for<0, NIterPerWarp, 1>{}([&](auto nIter) {
-        //     static_for<0, KIterPerWarp, 1>{}([&](auto kIter) {
-        //         b_flat_warp_windows(nIter)(kIter) = b_flat_warp_windows_tmp;
-
-        //         move_tile_window(b_flat_warp_windows(nIter)(kIter),
-        //                          {nIter * NFlatPerBlockPerIter, kIter * KFlatPerBlockPerIter});
-        //     });
-        // });
-
-        // auto b_warp_windows = b_origin_warp_windows;
-        // auto b_warp_windows = b_flat_warp_windows;
-
         using CWarpDstr   = typename WG::CWarpDstr;
         using CWarpTensor = typename WG::CWarpTensor;
 
@@ -150,9 +125,6 @@ struct BlockFlatmmASmemBSmemCRegV1
                 const auto a_warp_tensor = load_tile(a_warp_windows(mIter)(kIter));
 
                 static_for<0, NIterPerWarp, 1>{}([&](auto nIter) {
-                    // read B warp tensor from B Block window
-                    // const auto b_warp_tensor = load_tile(b_warp_windows(nIter)(kIter));
-
                     // read C warp tensor from C block tensor
                     CWarpTensor c_warp_tensor;
 
@@ -172,16 +144,6 @@ struct BlockFlatmmASmemBSmemCRegV1
             });
         });
     }
-
-    // // C = A * B
-    // template <typename ABlockTensorTmp, typename BFlatBlockWindow>
-    // CK_TILE_DEVICE auto operator()(const ABlockTensorTmp& a_block_tensor_tmp,
-    //                                const BFlatBlockWindow& b_flat_block_window) const
-    // {
-    //     auto c_block_tensor = MakeCBlockTile();
-    //     operator()(c_block_tensor, a_block_tensor_tmp, b_flat_block_window);
-    //     return c_block_tensor;
-    // }
 };
 
 } // namespace ck_tile