diff --git a/example/ck_tile/01_fmha/codegen/ops/fmha_fwd_appendkv.py b/example/ck_tile/01_fmha/codegen/ops/fmha_fwd_appendkv.py
index 72b76b011a..793a743df7 100644
--- a/example/ck_tile/01_fmha/codegen/ops/fmha_fwd_appendkv.py
+++ b/example/ck_tile/01_fmha/codegen/ops/fmha_fwd_appendkv.py
@@ -515,5 +515,5 @@ def list_blobs(
             targets, kernel_filter, receipt, mask_impl, optdim_list
         )
         for kernel in kernels:
-            f.write(str(file_path.parent / GEN_DIR / kernel.filename) + "\n")
-        f.write(str(file_path.parent / GEN_DIR / FMHA_FWD_APPENDKV_API_FILENAME) + "\n")
+            f.write((file_path.parent / GEN_DIR / kernel.filename).as_posix() + "\n")
+        f.write((file_path.parent / GEN_DIR / FMHA_FWD_APPENDKV_API_FILENAME).as_posix() + "\n")