diff --git a/ocaml-ounit.spec b/ocaml-ounit.spec
index 5f8f07b..aa8bedc 100644
--- a/ocaml-ounit.spec
+++ b/ocaml-ounit.spec
@@ -15,8 +15,9 @@
 # Please submit bugfixes or comments via http://bugs.opensuse.org/
 #
 
-%define		distname	ounit
 
+%define		distname	ounit
+%{ocaml_preserve_bytecode}
 Name:           ocaml-%{distname}
 Version:        2.0.0
 Release:        0
@@ -25,9 +26,10 @@ License:        GPL-3.0
 Group:          Development/Libraries/Other
 Url:            http://ounit.forge.ocamlcore.org/
 Source0:        %{distname}-%{version}.tar.gz
-BuildRequires:	ocaml
-BuildRequires:	ocaml-findlib
-BuildRequires:	ocaml-ocamldoc
+BuildRequires:  ocaml
+BuildRequires:  ocaml-findlib
+BuildRequires:  ocaml-ocamldoc
+BuildRequires:  ocaml-rpm-macros >= 4.02.1
 BuildRoot:      %{_tmppath}/%{name}-%{version}-build
 
 %description
@@ -37,9 +39,9 @@ framework for Haskell. It is similar to JUnit, and other xUnit testing
 frameworks.
 
 %package devel
-Summary:	Development files for %{name}
-Group:		Development/Libraries/Other
-Requires:	%{name} = %{version}
+Summary:        Development files for %{name}
+Group:          Development/Libraries/Other
+Requires:       %{name} = %{version}
 
 %description devel
 Development files needed for application based on %{name}.
@@ -59,7 +61,6 @@ ocaml setup.ml -configure \
       --sysconfdir '%{_sysconfdir}' \
       --exec-prefix '%{_exec_prefix}' \
       --sharedstatedir '%{_sharedstatedir}'
-      
 
 %build
 make %{?_smp_mflags}
@@ -73,18 +74,22 @@ make install %{?_smp_mflags}
 %defattr(-,root,root,-)
 %doc
 %{_libdir}/ocaml/oUnit
-%exclude %{_libdir}/ocaml/oUnit/*.a
 %exclude %{_libdir}/ocaml/oUnit/*.ml
 %exclude %{_libdir}/ocaml/oUnit/*.mli
+%if %{ocaml_native_compiler}
+%exclude %{_libdir}/ocaml/oUnit/*.a
 %exclude %{_libdir}/ocaml/oUnit/*.cmx
 %exclude %{_libdir}/ocaml/oUnit/*.cmxa
+%endif
 
 %files devel
 %defattr(-,root,root,-)
-%{_libdir}/ocaml/oUnit/*.a
 %{_libdir}/ocaml/oUnit/*.ml
 %{_libdir}/ocaml/oUnit/*.mli
+%if %{ocaml_native_compiler}
+%{_libdir}/ocaml/oUnit/*.a
 %{_libdir}/ocaml/oUnit/*.cmx
 %{_libdir}/ocaml/oUnit/*.cmxa
+%endif
 
 %changelog