diff --git a/pkgs/applications/audio/guitarix/default.nix b/pkgs/applications/audio/guitarix/default.nix
index a5e29a5e174..642cbbd23f6 100644
--- a/pkgs/applications/audio/guitarix/default.nix
+++ b/pkgs/applications/audio/guitarix/default.nix
@@ -1,8 +1,8 @@
 { stdenv, fetchurl, gettext, intltool, pkgconfig, python2
 , avahi, bluez, boost, eigen, fftw, glib, glib_networking
 , glibmm, gsettings_desktop_schemas, gtkmm2, libjack2
-, ladspaH, librdf, libsndfile, lilv, lv2, serd, sord, sratom
-, webkitgtk2, wrapGAppsHook, zita-convolver, zita-resampler
+, ladspaH, libav, librdf, libsndfile, lilv, lv2, serd, sord, sratom
+, wrapGAppsHook, zita-convolver, zita-resampler
 , optimizationSupport ? false # Enable support for native CPU extensions
 }:
 
@@ -23,8 +23,8 @@ stdenv.mkDerivation rec {
 
   buildInputs = [
     avahi bluez boost eigen fftw glib glibmm glib_networking.out
-    gsettings_desktop_schemas gtkmm2 libjack2 ladspaH librdf
-    libsndfile lilv lv2 serd sord sratom webkitgtk2 zita-convolver
+    gsettings_desktop_schemas gtkmm2 libjack2 ladspaH libav librdf
+    libsndfile lilv lv2 serd sord sratom zita-convolver
     zita-resampler
   ];
 
@@ -33,6 +33,9 @@ stdenv.mkDerivation rec {
     "--no-desktop-update"
     "--enable-nls"
     "--no-faust" # todo: find out why --faust doesn't work
+    "--install-roboto-font"
+    "--includeresampler"
+    "--convolver-ffmpeg"
   ] ++ optional optimizationSupport "--optimization";
 
   configurePhase = ''python2 waf configure --prefix=$out $configureFlags'';