diff --git a/ocaml-csexp.spec b/ocaml-csexp.spec
index ba4d3c017083e3104c0bf1441382a9a13f0aa0fa..01865217a3513f1705ffafd2ea58b0fe4dc6c30a 100644
--- a/ocaml-csexp.spec
+++ b/ocaml-csexp.spec
@@ -1,4 +1,4 @@
-%ifnarch %{ocaml_native_compiler}
+%ifarch sw_64
 %global debug_package %{nil}
 %endif
 
@@ -6,7 +6,7 @@
 
 Name:           ocaml-csexp
 Version:        1.5.2
-Release:        1
+Release:        2
 Summary:        Parsing and printing of S-expressions in canonical form
 
 License:        MIT
@@ -45,7 +45,7 @@ OCFLAGS="$OFLAGS -bin-annot"
 cd src
 ocamlc $OCFLAGS -output-obj csexp.mli
 ocamlc $OCFLAGS -a -o csexp.cma csexp.ml
-%ifarch %{ocaml_native_compiler}
+%ifnarch sw_64
 ocamlopt $OFLAGS -ccopt "%{build_cflags}" -cclib "%{build_ldflags}" -a \
   -o csexp.cmxa csexp.ml
 ocamlopt $OFLAGS -ccopt "%{build_cflags}" -cclib "%{build_ldflags}" -shared \
@@ -66,7 +66,7 @@ rm -fr %{buildroot}%{_prefix}/doc
 %else
 mkdir -p %{buildroot}%{_libdir}/ocaml/csexp
 cp -p src/csexp.{cma,cmi,cmt,cmti,mli} %{buildroot}%{_libdir}/ocaml/csexp
-%ifarch %{ocaml_native_compiler}
+%ifnarch sw_64
 cp -p src/csexp.{a,cmx,cmxa,cmxs} %{buildroot}%{_libdir}/ocaml/csexp
 %endif
 cp -p csexp.opam %{buildroot}%{_libdir}/ocaml/csexp/opam
@@ -75,11 +75,11 @@ cat >> %{buildroot}%{_libdir}/ocaml/csexp/META << EOF
 version = "%{version}"
 description = "Parsing and printing of S-expressions in canonical form"
 archive(byte) = "csexp.cma"
-%ifarch %{ocaml_native_compiler}
+%ifnarch sw_64
 archive(native) = "csexp.cmxa"
 %endif
 plugin(byte) = "csexp.cma"
-%ifarch %{ocaml_native_compiler}
+%ifnarch sw_64
 plugin(native) = "csexp.cmxs"
 %endif
 EOF
@@ -91,7 +91,7 @@ cat >> %{buildroot}%{_libdir}/ocaml/csexp/dune-package << EOF
 (library
  (name csexp)
  (kind normal)
-%ifarch %{ocaml_native_compiler}
+%ifnarch sw_64
  (archives (byte csexp.cma) (native csexp.cmxa))
  (plugins (byte csexp.cma) (native csexp.cmxs))
  (native_archives csexp.a)
@@ -100,7 +100,7 @@ cat >> %{buildroot}%{_libdir}/ocaml/csexp/dune-package << EOF
  (plugins (byte csexp.cma))
 %endif
  (main_module_name Csexp)
-%ifarch %{ocaml_native_compiler}
+%ifnarch sw_64
  (modes byte native)
 %else
  (modes byte)
@@ -118,14 +118,14 @@ EOF
 %{_libdir}/ocaml/csexp/META
 %{_libdir}/ocaml/csexp/*.cma
 %{_libdir}/ocaml/csexp/*.cmi
-%ifarch %{ocaml_native_compiler}
+%ifnarch sw_64
 %{_libdir}/ocaml/csexp/*.cmxs
 %endif
 
 %files devel
 %{_libdir}/ocaml/csexp/dune-package
 %{_libdir}/ocaml/csexp/opam
-%ifarch %{ocaml_native_compiler}
+%ifnarch sw_64
 %{_libdir}/ocaml/csexp/*.a
 %{_libdir}/ocaml/csexp/*.cmx
 %{_libdir}/ocaml/csexp/*.cmxa
@@ -135,6 +135,9 @@ EOF
 %{_libdir}/ocaml/csexp/*.mli
 
 %changelog
+* Tue Feb 18 2025 zhangshaoning <zhangshaoning@uniontech.com> - 1.5.2-2
+- Add sw_64 support
+
 * Mon Jul 17 2023 niuyaru <niuyaru@kylinos.cn> - 1.5.2-1
 - Update package to version 1.5.2