diff --git a/www/firefox/firefox.conf b/www/firefox/firefox.conf
index 10358d188..506010b6c 100644
--- a/www/firefox/firefox.conf
+++ b/www/firefox/firefox.conf
@@ -32,6 +32,7 @@ ac_add_options --enable-mathml
 ac_add_options --enable-crypto
 ac_add_options --enable-module=psm
 ac_add_options --without-system-png
+ac_add_options --enable-default-toolkit=cairo-gtk2
 ac_add_options --disable-profilesharing
 
 EOT