diff --git a/dspam.spec b/dspam.spec
index d94b3f5..559d977 100644
--- a/dspam.spec
+++ b/dspam.spec
@@ -38,6 +38,8 @@ BuildRequires:			systemd-units
 
 Requires:               dspam-libs = %{version}-%{release}
 Requires(post): 		systemd-sysv
+Conflicts:              systemd < 38
+Conflicts:              filesystem < 3
 
 %description
 The DSPAM agent masquerades as the email server's local delivery agent