diff --git a/media-libs/farsight/farsight-0.1.28.ebuild b/media-libs/farsight/farsight-0.1.28.ebuild
index b46fb19..97a2005 100644
--- a/media-libs/farsight/farsight-0.1.28.ebuild
+++ b/media-libs/farsight/farsight-0.1.28.ebuild
@@ -2,6 +2,8 @@
 # Distributed under the terms of the GNU General Public License v2
 # $Header: /var/cvsroot/gentoo-x86/media-libs/farsight/farsight-0.1.28.ebuild,v 1.1 2008/08/24 15:23:09 tester Exp $
 
+inherit eutils
+
 DESCRIPTION="FarSight is an audio/video conferencing framework specifically designed for Instant Messengers."
 HOMEPAGE="http://farsight.freedesktop.org/"
 SRC_URI="http://farsight.freedesktop.org/releases/${PN}/${P}.tar.gz"
@@ -31,6 +33,12 @@ DEPEND="${COMMON_DEPEND}
 	doc? ( >=dev-util/gtk-doc-1.5 )
 	test? ( >=dev-libs/check-0.9.4 )"
 
+pkg_setup() {
+	if use jingle && ! built_with_use -o media-plugins/gst-plugins-farsight jingle ; then
+		die "${PN} needs media-plugins/gst-plugins-farsight built with jingle"
+	fi
+}
+
 src_compile() {
 	# I'm disabling clinkc because it sucks, isnt in portage
 	# and I couldnt care less for upnp
diff --git a/net-voip/telepathy-gabble/telepathy-gabble-0.7.8.ebuild b/net-voip/telepathy-gabble/telepathy-gabble-0.7.8.ebuild
index 7105f21..c0855c5 100644
--- a/net-voip/telepathy-gabble/telepathy-gabble-0.7.8.ebuild
+++ b/net-voip/telepathy-gabble/telepathy-gabble-0.7.8.ebuild
@@ -11,13 +11,14 @@ SRC_URI="http://telepathy.freedesktop.org/releases/${PN}/${P}.tar.gz"
 LICENSE="LGPL-2.1"
 SLOT="0"
 KEYWORDS="~amd64 ~x86"
-IUSE="debug test"
+IUSE="debug jingle test"
 
 RDEPEND=">=dev-libs/glib-2.10
 	>=dev-libs/dbus-glib-0.73
 	>=net-libs/telepathy-glib-0.7.14
 	dev-lang/python
-	>=net-libs/loudmouth-1.3.2"
+	>=net-libs/loudmouth-1.3.2
+	jingle? ( >=net-voip/telepathy-stream-engine-0.5.2 )"
 
 DEPEND="${RDEPEND}
 	dev-libs/libxslt
@@ -30,6 +31,10 @@ pkg_setup() {
 		eerror "USE='gnutls' or USE='ssl'."
 		die "No TLS support in net-libs/loudmouth"
 	fi
+	# farsight is a dependency of telepathy-stream-engine
+	if use jingle && ! built_with_use -o media-libs/farsight jingle ; then
+		die "${PN} needs media-libs/farsight built with USE=jingle"
+	fi
 }
 
 src_compile() {