diff --git a/src/nvfp4_megamoe_kernel/cutlass_nvfp4_gemm/cutlass_nvfp4_gemm.cu b/src/nvfp4_megamoe_kernel/cutlass_nvfp4_gemm/cutlass_nvfp4_gemm.cu
index 566444b3..1ce952b7 100644
--- a/src/nvfp4_megamoe_kernel/cutlass_nvfp4_gemm/cutlass_nvfp4_gemm.cu
+++ b/src/nvfp4_megamoe_kernel/cutlass_nvfp4_gemm/cutlass_nvfp4_gemm.cu
@@ -135,8 +135,6 @@ __global__ void remap_sf_to_cutlass_kernel(
 
     constexpr int LayoutRank = cute::rank_v<decltype(layout_sf.shape())>;
 
-    int dst_idx = 0;
-    // Use crd2idx to map flat logical coordinate to CUTLASS physical index.
     // Decompose flat (mn, k_sf) into hierarchical coordinates matching the atom layout:
     // Shape: ((32, 4, mn_tiles), (SFVecSize, 4, k_tiles), ...)
     // First group: mn = m0 + 32*m1 + 128*mt  where m0 in [0,32), m1 in [0,4), mt = mn/128