diff --git a/firefox.spec b/firefox.spec
index f9a08e0..dc6fe53 100644
--- a/firefox.spec
+++ b/firefox.spec
@@ -105,7 +105,7 @@ BuildRequires:	wget
 BuildRequires:	pkgconfig(libnotify)
 #BuildRequires:	cairo-devel >= 1.10
 BuildRequires:	pkgconfig(gl)
-BuildRequires:	pkgconfig(vpx)
+#BuildRequires:	pkgconfig(vpx)
 BuildRequires:	autoconf2.1
 BuildRequires:	libiw-devel
 BuildRequires:	pkgconfig(gstreamer-1.0)
@@ -218,7 +218,7 @@ ac_add_options --datadir="%{_datadir}"
 ac_add_options --with-system-nspr
 ac_add_options --with-system-nss
 ac_add_options --with-system-zlib
-ac_add_options --with-system-libvpx
+ac_add_options --without-system-libvpx
 ac_add_options --with-system-bz2
 ac_add_options --enable-libnotify
 ac_add_options --enable-svg