diff --git a/machine-confs/helium.nix b/machine-confs/helium.nix
index 9966dab..316e7f9 100644
--- a/machine-confs/helium.nix
+++ b/machine-confs/helium.nix
@@ -80,7 +80,7 @@
   ];
 
   services.xserver.displayManager.setupCommands = ''
-    ${pkgs.xorg.xrandr}/bin/xrandr --output DisplayPort-0 --auto --pos 0x0 --primary --output eDP --auto --pos 3840x360
+    ${pkgs.xorg.xrandr}/bin/xrandr --output DP-1 --auto --pos 0x0 --primary --output eDP-1 --auto --pos 3840x360
   '';
 
   system.autoUpgrade.allowReboot = pkgs.lib.mkForce false;
diff --git a/program-config-files/i3.nix b/program-config-files/i3.nix
index 6b38aff..55f6a54 100644
--- a/program-config-files/i3.nix
+++ b/program-config-files/i3.nix
@@ -173,14 +173,14 @@ pkgs.writeText "i3-conf" ''
   workspace 8 output primary
   workspace 9 output primary
   workspace 10 output primary
-  workspace 11 output eDP primary
-  workspace 12 output eDP primary
-  workspace 13 output eDP primary
-  workspace 14 output eDP primary
-  workspace 15 output eDP primary
-  workspace 16 output eDP primary
-  workspace 17 output eDP primary
-  workspace 18 output eDP primary
+  workspace 11 output eDP-1 primary
+  workspace 12 output eDP-1 primary
+  workspace 13 output eDP-1 primary
+  workspace 14 output eDP-1 primary
+  workspace 15 output eDP-1 primary
+  workspace 16 output eDP-1 primary
+  workspace 17 output eDP-1 primary
+  workspace 18 output eDP-1 primary
 
   # switch to workspace
   bindsym $mod+1 workspace 1