diff --git a/etc/supervisord.d/x11vnc.conf b/etc/supervisord.d/x11vnc.conf
index f0d2d7e..3bd8c91 100644
--- a/etc/supervisord.d/x11vnc.conf
+++ b/etc/supervisord.d/x11vnc.conf
@@ -1,5 +1,5 @@
 [program:X11]
-command=/usr/bin/Xvfb :0 -screen 0 1024x768x24
+command=/usr/bin/Xvfb :0 -screen 0 1280x720x24 -nolisten unix -ac +extension GLX +extension RENDER
 autorestart=true
 stdout_logfile=/dev/fd/1
 stdout_logfile_maxbytes=0