diff --git a/machines/luna/configuration.nix b/machines/luna/configuration.nix
index 838dbd7..f11fb7c 100644
--- a/machines/luna/configuration.nix
+++ b/machines/luna/configuration.nix
@@ -26,6 +26,7 @@
   services.desktopManager.plasma6.enable = true;
   services.xserver.displayManager.sddm.enable = true;
   services.xserver.displayManager.sddm.autoNumlock = true;
+  services.xserver.displayManager.defaultSession = "plasmax11";
   boot.loader.systemd-boot.enable = true;  
   boot.kernelModules = [ "snd-seq" "snd-rawmidi" ];
 
diff --git a/machines/terra/configuration.nix b/machines/terra/configuration.nix
index 2a9201f..5d47326 100644
--- a/machines/terra/configuration.nix
+++ b/machines/terra/configuration.nix
@@ -45,6 +45,7 @@
   services.desktopManager.plasma6.enable = true;
   services.xserver.displayManager.sddm.enable = true;
   services.xserver.displayManager.sddm.autoNumlock = true;
+  services.xserver.displayManager.defaultSession = "plasmax11";
   boot.loader.systemd-boot.enable = true;
 
   virtualisation.docker.enable = true;