diff --git a/imsettings.spec b/imsettings.spec
index b8cf2e8..881b435 100644
--- a/imsettings.spec
+++ b/imsettings.spec
@@ -1,6 +1,6 @@
 Name:		imsettings
 Version:	1.7.2
-Release:	4%{?dist}
+Release:	5%{?dist}
 License:	LGPLv2+
 URL:		https://tagoh.bitbucket.org/%{name}/
 BuildRequires:	desktop-file-utils
@@ -27,8 +27,8 @@ Group:		Applications/System
 Requires:	xorg-x11-xinit >= 1.0.2-22.fc8
 Requires:	%{name}-libs%{?_isa} = %{version}-%{release}
 Requires:	%{name}-desktop-module%{?_isa} = %{version}-%{release}
-Requires(post):	/usr/bin/dbus-send %{_sbindir}/alternatives
-Requires(postun):	/usr/bin/dbus-send %{_sbindir}/alternatives
+Requires(post):	systemd %{_sbindir}/alternatives
+Requires(postun):	systemd %{_sbindir}/alternatives
 Suggests:	%{name}-gsettings
 
 %description
@@ -235,14 +235,14 @@ desktop-file-validate $RPM_BUILD_ROOT%{_sysconfdir}/xdg/autostart/imsettings-sta
 alternatives --install %{_sysconfdir}/X11/xinit/xinputrc xinputrc %{_sysconfdir}/X11/xinit/xinput.d/none.conf 10
 alternatives --install %{_sysconfdir}/X11/xinit/xinputrc xinputrc %{_sysconfdir}/X11/xinit/xinput.d/xcompose.conf 20
 alternatives --install %{_sysconfdir}/X11/xinit/xinputrc xinputrc %{_sysconfdir}/X11/xinit/xinput.d/xim.conf 30
-dbus-send --system --type=method_call --dest=org.freedesktop.DBus / org.freedesktop.DBus.ReloadConfig > /dev/null 2>&1 || :
+systemctl reload dbus.service 2>&1 || :
 
 %postun
 if [ "$1" = 0 ]; then
 	alternatives --remove xinputrc %{_sysconfdir}/X11/xinit/xinput.d/none.conf
 	alternatives --remove xinputrc %{_sysconfdir}/X11/xinit/xinput.d/xcompose.conf
 	alternatives --remove xinputrc %{_sysconfdir}/X11/xinit/xinput.d/xim.conf
-	dbus-send --system --type=method_call --dest=org.freedesktop.DBus / org.freedesktop.DBus.ReloadConfig > /dev/null 2>&1 || :
+	systemctl reload dbus.service 2>&1 || :
 fi
 
 %post libs -p /sbin/ldconfig
@@ -313,6 +313,9 @@ fi
 
 
 %changelog
+* Sat Sep 23 2017 Akira TAGOH <tagoh@redhat.com> - 1.7.2-5
+- Reload dbus.service instead of calling through dbus-send.
+
 * Wed Aug 02 2017 Fedora Release Engineering <releng@fedoraproject.org> - 1.7.2-4
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_27_Binutils_Mass_Rebuild