diff --git a/community/xulrunner/PKGBUILD b/community/xulrunner/PKGBUILD
index 643deb987..36c9619eb 100644
--- a/community/xulrunner/PKGBUILD
+++ b/community/xulrunner/PKGBUILD
@@ -14,7 +14,7 @@ pkgdesc="Mozilla Runtime Environment"
 arch=('i686' 'x86_64')
 license=('MPL' 'GPL' 'LGPL')
 depends=('gtk2' 'mozilla-common' 'nss' 'libxt' 'hunspell' 'startup-notification' 'mime-types' 'dbus-glib' 'libpulse' 'libevent' 'libvpx' 'icu' 'python2')
-makedepends=('zip' 'unzip' 'pkg-config' 'diffutils' 'yasm' 'mesa' 'autoconf2.13' 'gst-plugins-base-libs')
+makedepends=('zip' 'unzip' 'pkg-config' 'diffutils' 'yasm' 'mesa' 'autoconf2.13' 'gst-plugins-base-libs' 'opus')
 url="http://wiki.mozilla.org/XUL:Xul_Runner"
 source=(ftp://ftp.mozilla.org/pub/mozilla.org/xulrunner/releases/$pkgver/source/xulrunner-$pkgver.source.tar.bz2
         mozconfig