diff --git a/shim/xplat/executorch/kernels/portable/op_registration_util.bzl b/shim/xplat/executorch/kernels/portable/op_registration_util.bzl
index c5349b9475b..6a25f35c304 100644
--- a/shim/xplat/executorch/kernels/portable/op_registration_util.bzl
+++ b/shim/xplat/executorch/kernels/portable/op_registration_util.bzl
@@ -150,7 +150,7 @@ def define_op_library(name, deps, android_deps, aten_target, _allow_third_party_
             # library, and it blocks users like unit tests to use kernel
             # implementation directly. So we enable this for xplat only.
             ["-fvisibility=hidden"] if is_xplat() else []
-        ),
+        ) + get_compiler_optimization_flags(),
         deps = [
             "//executorch/runtime/kernel:kernel_includes" + aten_suffix,
         ] + deps,