diff --git a/sblim-sfcb.spec b/sblim-sfcb.spec
index 56dfffa..752808d 100644
--- a/sblim-sfcb.spec
+++ b/sblim-sfcb.spec
@@ -30,6 +30,9 @@ BuildRequires: bison flex
 Requires(post): systemd-units
 Requires(preun): systemd-units
 Requires(postun): systemd-units
+BuildRequires: systemd-units
+Conflicts: systemd < 38
+Conflicts: filesystem < 3
 
 %Description
 Small Footprint CIM Broker (sfcb) is a CIM server conforming to the
@@ -88,8 +91,8 @@ echo "%{_libdir}/sfcb/*.so" >> _pkg_list
 #echo "%{_libdir}/sfcb/*.la" >> _pkg_list
 
 cat _pkg_list
-mkdir -p $RPM_BUILD_ROOT/lib/systemd/system
-install -p -m644 %{SOURCE1} $RPM_BUILD_ROOT/lib/systemd/system/sfcb.service
+mkdir -p $RPM_BUILD_ROOT%{_unitdir}
+install -p -m644 %{SOURCE1} $RPM_BUILD_ROOT%{_unitdir}/sfcb.service
 
 %clean
 rm -rf $RPM_BUILD_ROOT 
@@ -135,7 +138,7 @@ if [ $1 -eq 0 ]; then
 fi;
 
 %files -f _pkg_list
-/lib/systemd/system/sfcb.service
+%{_unitdir}/sfcb.service
 #%files devel
 #%defattr(-,root,root)
 ##%{_includedir}/*