diff --git a/postplug.d/30xorg b/postplug.d/30xorg
index 592e8bc..02f1f51 100644
--- a/postplug.d/30xorg
+++ b/postplug.d/30xorg
@@ -185,6 +185,7 @@ if [ -e $XORGCONF ]; then
    VIDEODRIVER=${VIDEODRIVERS[0]}
 
    [ -e /sys/module/nouveau/parameters/modeset ] && NOUVEAU_MODESET=`cat /sys/module/nouveau/parameters/modeset`
+   [ "$NOUVEAU_MODESET" = "-1" ] && NOUVEAU_MODESET=1
    [ -e /sys/module/radeon/parameters/modeset ] && RADEON_MODESET=`cat /sys/module/radeon/parameters/modeset`
 
    if [ "$VIDEODRIVER" = "nvidia" -a "$NOUVEAU_MODESET" = "1" ]; then