diff --git a/shadowsocks-libev.changes b/shadowsocks-libev.changes
index 6abe39a..2511a24 100644
--- a/shadowsocks-libev.changes
+++ b/shadowsocks-libev.changes
@@ -1,3 +1,8 @@
+-------------------------------------------------------------------
+Mon Mar 25 14:01:01 UTC 2019 - Hillwood Yang <hillwood@opensuse.org>
+
+- Fix postun. 
+
 -------------------------------------------------------------------
 Mon Mar  4 06:28:42 UTC 2019 - Michael Du <duyizhaozj321@yahoo.com>
 
diff --git a/shadowsocks-libev.spec b/shadowsocks-libev.spec
index dec9c12..57add00 100644
--- a/shadowsocks-libev.spec
+++ b/shadowsocks-libev.spec
@@ -52,8 +52,9 @@ BuildRequires:  asciidoc
 BuildRequires:  systemd
 BuildRequires:  xmlto
 Recommends:     simple-obfs
-%{?systemd_requires}
+BuildRequires:  systemd-rpm-macros
 BuildRoot:      %{_tmppath}/%{name}-%{version}-build
+%{?systemd_ordering}
 
 %description
 shadowsocks-libev is a lightweight secured SOCKS5 proxy
@@ -123,24 +124,36 @@ ln -sf %{_sbindir}/service %{buildroot}%{_sbindir}/rcshadowsocks-libev-redir
 ln -sf %{_sbindir}/service %{buildroot}%{_sbindir}/rcshadowsocks-libev-tunnel
 
 %pre
-%{service_add_pre %{name}-server.service %{name}-client.service \
-    %{name}-manager.service %{name}-nat.service %{name}-redir.service \
-    %{name}-tunnel.service}
+%service_add_pre %{name}-server.service
+%service_add_pre %{name}-client.service
+%service_add_pre %{name}-manager.service 
+%service_add_pre %{name}-nat.service 
+%service_add_pre %{name}-redir.service
+%service_add_pre %{name}-tunnel.service
 
 %post
-%{service_add_post %{name}-server.service %{name}-client.service \
-    %{name}-manager.service %{name}-nat.service %{name}-redir.service \
-    %{name}-tunnel.service}
+%service_add_post %{name}-server.service
+%service_add_post %{name}-client.service
+%service_add_post %{name}-manager.service
+%service_add_post %{name}-nat.service
+%service_add_post %{name}-redir.service
+%service_add_post %{name}-tunnel.service
 
 %preun
-%{service_del_preun %{name}-server.service %{name}-client.service \
-    %{name}-manager.service %{name}-nat.service %{name}-redir.service \
-    %{name}-tunnel.service}
+%service_del_preun %{name}-server.service
+%service_del_preun %{name}-client.service
+%service_del_preun %{name}-manager.service
+%service_del_preun %{name}-nat.service
+%service_del_preun %{name}-redir.service
+%service_del_preun %{name}-tunnel.service
 
 %postun
-%{service_del_postun %{name}-server.service %{name}-client.service \
-    %{name}-manager.service %{name}-nat.service %{name}-redir.service \
-    %{name}-tunnel.service}
+%service_del_postun %{name}-server.service 
+%service_del_postun %{name}-client.service
+%service_del_postun %{name}-manager.service 
+%service_del_postun %{name}-nat.service 
+%service_del_postun %{name}-redir.service
+%service_del_postun %{name}-tunnel.service
 
 %post -n lib%{name}2 -p /sbin/ldconfig