diff --git a/mrtg.spec b/mrtg.spec
index 9d20c6a..02b736f 100644
--- a/mrtg.spec
+++ b/mrtg.spec
@@ -82,7 +82,7 @@ install -m 644 %{SOURCE5} $RPM_BUILD_ROOT%{_sysconfdir}/httpd/conf.d/mrtg.conf
 %endif
 
 # install systemd files
-mkdir -p $RPM_BUILD_ROOT/lib/systemd/system
+mkdir -p $RPM_BUILD_ROOT%{_unitdir}
 install -p -m 644 %{SOURCE8} $RPM_BUILD_ROOT%{_unitdir}/mrtg.service
 install -p -m 644 %{SOURCE9} $RPM_BUILD_ROOT%{_unitdir}/mrtg.timer
 
@@ -138,6 +138,7 @@ fi
 %changelog
 * Thu Mar 01 2012 Vitezslav Crhonek <vcrhonek@redhat.com> - 2.17.4-1
 - Update to mrtg-2.17.4
+- Use unitdir macro when creating directory for systemd units
 
 * Mon Jan 09 2012 Vitezslav Crhonek <vcrhonek@redhat.com> - 2.17.3-2
 - Fix 'undefined subroutine &SNMP_Session::inet_ntop called at