diff --git a/example/ck_tile/01_fmha/codegen/ops/fmha_batch_prefill.py b/example/ck_tile/01_fmha/codegen/ops/fmha_batch_prefill.py
index bd63c5d78f..7a45687476 100644
--- a/example/ck_tile/01_fmha/codegen/ops/fmha_batch_prefill.py
+++ b/example/ck_tile/01_fmha/codegen/ops/fmha_batch_prefill.py
@@ -579,6 +579,7 @@ def get_hdim_tile_size_dict(dtype: str) -> Optional[dict]:
         if dtype == "fp16" or dtype == "bf16":
             return {
                 128 : [FmhaFwdTileSize(128, 128, 32, 128, 32,  128,  4, 1, 1,  4, 1, 1,  32, 32, 16,  32, 32, 16,  -1)],
+                256 : [FmhaFwdTileSize(128, 128, 32, 256, 32,  256,  4, 1, 1,  4, 1, 1,  32, 32, 16,  32, 32, 16,  -1)],
             }  # fmt: skip
         else:
             return None