diff --git a/cyrus-imapd.spec b/cyrus-imapd.spec
index 24ac041..f3a7705 100644
--- a/cyrus-imapd.spec
+++ b/cyrus-imapd.spec
@@ -34,7 +34,7 @@ Source13: cyr_systemd_helper
 Patch0: fix-sched_param.patch
 
 BuildRequires: autoconf automake bison flex groff libtool
-BuildRequires: pkgconfig tcp_wrappers transfig
+BuildRequires: pkgconfig systemd tcp_wrappers transfig
 
 BuildRequires: perl-devel perl-generators perl(ExtUtils::MakeMaker) perl(Pod::Html)
 
@@ -43,9 +43,7 @@ BuildRequires: libical-devel libxml2-devel net-snmp-devel openldap-devel
 BuildRequires: openssl-devel sqlite-devel
 
 Requires(pre): shadow-utils
-Requires(post): perl, grep, coreutils, systemd-units
-Requires(preun): systemd-units
-Requires(postun): systemd-units
+%{?systemd_requires}
 
 Requires: %{name}-utils = %{version}-%{release}
 Requires: file, libdb-utils