diff --git a/system/xorg/10-monitor.conf b/system/xorg/10-monitor.conf
index 4ce5c35..123f2b8 100644
--- a/system/xorg/10-monitor.conf
+++ b/system/xorg/10-monitor.conf
@@ -5,6 +5,7 @@ EndSection
 Section "Monitor"
 	Identifier "DisplayPort0"
 	Option "RightOf" "DVI0"
+	Option "Primary" "true"
 EndSection
 
 Section "Device"