diff --git a/labltk.spec b/labltk.spec
index 7776c73325202809784b301b57e3ddd7ec054ca3..4d832211d3cbe3398a642fa61df8003fa9168773 100644
--- a/labltk.spec
+++ b/labltk.spec
@@ -1,11 +1,11 @@
-%ifarch %{ocaml_native_compiler}
+%ifnarch sw_64
 %global native_compiler 1
 %else
 %global native_compiler 0
 %endif
 Name:                ocaml-labltk
 Version:             8.06.13
-Release:             1
+Release:             2
 Summary:             Tcl/Tk interface for OCaml
 License:             LGPLv2+ with exceptions
 URL:                 https://github.com/garrigue/labltk 
@@ -44,12 +44,12 @@ echo -e 'all:\ninstall:\n' > browser/Makefile
 %build
 ./configure -verbose
 unset MAKEFLAGS
-%if !%{native_compiler}
-make byte
-%else
+%if %{native_compiler}
 make all opt \
      SHAREDCCCOMPOPTS="%{optflags} -fPIC" \
      TK_LINK="%{__global_ldflags} -ltk8.6 -ltcl8.6"
+%else
+make byte
 %endif
 
 %install
@@ -90,6 +90,9 @@ install -m 0644 camltk/*.o $RPM_BUILD_ROOT%{_libdir}/ocaml/labltk
 %{_libdir}/ocaml/labltk/*.mli
 
 %changelog
+* Tue Feb 25 2025 zhangshaoning <zhangshaoning@uniontech.com> - 8.06.13-2
+- Add sw_64 support
+
 * Mon May 15 2023  liyanan <thistleslyn@163.com> - 8.06.13-1
 - update version to 8.06.13