diff --git a/ocaml-calendar.spec b/ocaml-calendar.spec
index 5e0c3c5..4cb291e 100644
--- a/ocaml-calendar.spec
+++ b/ocaml-calendar.spec
@@ -77,7 +77,7 @@ make DESTDIR=%{buildroot} install %{?_smp_mflags}
 %doc CHANGES README TODO LGPL COPYING
 %dir %{_libdir}/ocaml
 %dir %{_libdir}/ocaml/*
-%if %{defined ocaml_native_compiler}
+%if 0%{?ocaml_native_compiler}
 %{_libdir}/ocaml/*/*.cmxs
 %endif
 
@@ -86,7 +86,7 @@ make DESTDIR=%{buildroot} install %{?_smp_mflags}
 %doc CHANGES README TODO LGPL COPYING doc/*
 %dir %{_libdir}/ocaml
 %dir %{_libdir}/ocaml/*
-%if %{defined ocaml_native_compiler}
+%if 0%{?ocaml_native_compiler}
 %{_libdir}/ocaml/*/*.a
 %{_libdir}/ocaml/*/*.cmx
 %{_libdir}/ocaml/*/*.cmxa