diff --git a/slurm.changes b/slurm.changes
index 87a7d09..5e4691f 100644
--- a/slurm.changes
+++ b/slurm.changes
@@ -1,7 +1,17 @@
+-------------------------------------------------------------------
+Fri Jan 24 11:47:58 UTC 2020 - Dominique Leuenberger <dimstar@opensuse.org>
+
+- BuildRequire pkgconfig(systemd) instead of systemd: allow OBS to
+  shortcut through the -mini flavors.
+- Use systemd_ordering instead of systemd_requires: systemd is
+  never a strict requirement; but in case the system is scheduled
+  for installation together with systemd, we want systemd to be
+  installed prior to slurm.
+
 -------------------------------------------------------------------
 Thu Jan 23 17:44:29 UTC 2020 - Christian Goll <cgoll@suse.com>
 
-- start slurmdbd after mariabd (bsc#1161716)
+- start slurmdbd after mariadb (bsc#1161716)
 
 -------------------------------------------------------------------
 Mon Jan 13 15:41:48 UTC 2020 - Egbert Eich <eich@suse.com>
diff --git a/slurm.spec b/slurm.spec
index 14c8edb..d158ac4 100644
--- a/slurm.spec
+++ b/slurm.spec
@@ -187,7 +187,7 @@ BuildRequires:  libssh2-devel
 BuildRequires:  rrdtool-devel
 %if 0%{?with_systemd}
 %{?systemd_requires}
-BuildRequires:  systemd
+BuildRequires:  pkgconfig(systemd)
 %else
 Requires(post):         %insserv_prereq %fillup_prereq
 %endif
@@ -330,7 +330,7 @@ Recommends:     (%{name}-munge = %version if munge)
 Recommends:     %{name}-munge = %version
 %endif
 %if 0%{?with_systemd}
-%{?systemd_requires}
+%{?systemd_ordering}
 %else
 Requires(post):         %insserv_prereq %fillup_prereq
 %endif
@@ -449,7 +449,7 @@ Recommends:     (%{name}-munge = %version if munge)
 Recommends:     %{name}-munge = %version
 %endif
 %if 0%{?with_systemd}
-%{?systemd_requires}
+%{?systemd_ordering}
 %else
 Requires(post):         %insserv_prereq %fillup_prereq
 %endif
@@ -469,7 +469,7 @@ Requires(pre):  pwdutils
 Requires(pre):  shadow
 %endif
 %if 0%{?with_systemd}
-%{?systemd_requires}
+%{?systemd_ordering}
 %endif
 %{?upgrade:Provides: %{pname}-config = %{version}}
 %{?upgrade:Conflicts: %{pname}-config}