diff --git a/tomcat.spec b/tomcat.spec
index 2aed06e..8717f64 100644
--- a/tomcat.spec
+++ b/tomcat.spec
@@ -49,7 +49,7 @@
 %global tempdir %{cachedir}/temp
 %global workdir %{cachedir}/work
 %global _initrddir %{_sysconfdir}/init.d
-%global _systemddir /lib/systemd/system
+%global _systemddir %{_unitdir}
 
 Name:          tomcat
 Epoch:         0
@@ -115,6 +115,8 @@ Requires(preun):  redhat-lsb
 Requires(post):   systemd-units
 Requires(preun):  systemd-units
 Requires(postun): systemd-units
+Conflicts: systemd < 38
+Conflicts: filesystem < 3
 
 %description
 Tomcat is the servlet container that is used in the official Reference