diff --git a/example/ck_tile/01_fmha/codegen/ops/fmha_pagedkv_prefill.py b/example/ck_tile/01_fmha/codegen/ops/fmha_pagedkv_prefill.py
index 35a9aa8859..7f358bd48c 100644
--- a/example/ck_tile/01_fmha/codegen/ops/fmha_pagedkv_prefill.py
+++ b/example/ck_tile/01_fmha/codegen/ops/fmha_pagedkv_prefill.py
@@ -581,7 +581,7 @@ class KernelComponentFactoryGfx9(KernelComponentFactoryBase):
         if dtype in ["fp16", "bf16"]:
             return {
                 # "32":  FmhaFwdTileSize(128,  64, 16,  32, 32,  32,  2, 1, 1,  2, 1, 1,  32, 32, 16,  32, 32, 16,  -1),
-                "64":  FmhaFwdTileSize(128,  64, 32,  64, 32,  64,  4, 1, 1,  4, 1, 1,  32, 32, 16,  32, 32, 16,  -1),
+                "64":  FmhaFwdTileSize(128,  32, 32,  64, 32,  64,  4, 1, 1,  4, 1, 1,  32, 32, 16,  32, 32, 16,  -1),
                 # "96":  FmhaFwdTileSize(128, 128, 32, 128, 32,  96,  4, 1, 1,  4, 1, 1,  32, 32, 16,  32, 32, 16,  -1),
                 "128": FmhaFwdTileSize(128, 128, 32, 128, 32, 128,  4, 1, 1,  4, 1, 1,  32, 32, 16,  32, 32, 16,  -1),
                 # "192": FmhaFwdTileSize(128, 128, 32, 128, 32, 192,  4, 1, 1,  4, 1, 1,  32, 32, 16,  32, 32, 16,  -1),