diff --git a/nixos/modules/profiles/demo.nix b/nixos/modules/profiles/demo.nix
index 4e8c74deedba..52ba40902e87 100644
--- a/nixos/modules/profiles/demo.nix
+++ b/nixos/modules/profiles/demo.nix
@@ -11,7 +11,7 @@
       uid = 1000;
     };
 
-  services.xserver.displayManager = {
+  services.displayManager = {
     autoLogin = {
       enable = true;
       user = "demo";
diff --git a/nixos/modules/profiles/graphical.nix b/nixos/modules/profiles/graphical.nix
index d80456cede56..8cc31652f807 100644
--- a/nixos/modules/profiles/graphical.nix
+++ b/nixos/modules/profiles/graphical.nix
@@ -6,13 +6,12 @@
 {
   services.xserver = {
     enable = true;
-    displayManager.sddm.enable = true;
-    desktopManager.plasma5 = {
-      enable = true;
-    };
+    desktopManager.plasma5.enable = true;
     libinput.enable = true; # for touchpad support on many laptops
   };
 
+  services.displayManager.sddm.enable = true;
+
   # Enable sound in virtualbox appliances.
   hardware.pulseaudio.enable = true;