--- spice-vdagent-0.12.0.ebuild
+++ spice-vdagent-0.12.1.ebuild
@@ -13,7 +13,9 @@
 LICENSE="LGPL-2.1"
 SLOT="0"
 KEYWORDS="~amd64 ~x86"
-IUSE="+consolekit"
+IUSE="consolekit systemd"
+
+REQUIRED_USE="^^ ( consolekit systemd )"
 
 RDEPEND="x11-libs/libXfixes
 	x11-libs/libXrandr
@@ -21,7 +23,8 @@
 	x11-libs/libXinerama
 	>=x11-libs/libpciaccess-0.10
 	>=app-emulation/spice-protocol-0.10.1
-	consolekit? ( sys-auth/consolekit sys-apps/dbus )"
+	consolekit? ( sys-auth/consolekit sys-apps/dbus )
+	systemd? ( sys-apps/systemd )"
 DEPEND="virtual/pkgconfig
 	${RDEPEND}"
 
@@ -33,6 +36,7 @@
 	local opt=
 
 	use consolekit && opt="${opt} --with-session-info=console-kit"
+	use systemd && opt="${opt} --with-session-info=systemd --with-init-script=systemd"
 
 	econf \
 		--localstatedir=/var \