diff --git a/profiles/base/desktop/package.use/default b/profiles/base/desktop/package.use/default
index 00ca6f1c9..435fefe7f 100644
--- a/profiles/base/desktop/package.use/default
+++ b/profiles/base/desktop/package.use/default
@@ -236,7 +236,8 @@ media-gfx/ufraw gimp
 media-sound/clementine mtp
 
 # required by www-client/chromium-43.0.2357.130 (https://bugs.gentoo.org/show_bug.cgi?id=553502)
-media-libs/libvpx postproc
+# required by www-client/firefox-46.0 [system-libvpx]
+media-libs/libvpx postproc svc
 
 # required by media-gfx/digikam-4.4.0-r1
 kde-apps/marble plasma
diff --git a/profiles/base/package.keywords/depends b/profiles/base/package.keywords/depends
index f6e021449..31628e817 100644
--- a/profiles/base/package.keywords/depends
+++ b/profiles/base/package.keywords/depends
@@ -70,6 +70,7 @@
 ~media-libs/libechonest-2.3.1 amd64 x86
 ~media-libs/libmygpo-qt-1.0.8 amd64 x86
 ~media-libs/libpng-1.6.18 amd64 x86
+~media-libs/libvpx-1.5.0 amd64 x86
 ~media-libs/mlt-0.9.8 amd64 x86
 ~media-libs/opencv-3.0.0 amd64 x86
 =media-libs/rubberband-1.8.1 amd64 x86