diff --git a/nixos/configuration.nix b/nixos/configuration.nix
index 2a7fa0d..9ec42db 100644
--- a/nixos/configuration.nix
+++ b/nixos/configuration.nix
@@ -50,13 +50,13 @@
   services.xserver.enable = true;
 
   # Enable the KDE Plasma Desktop Environment.
-  services.xserver.displayManager.sddm.enable = true;
+  services.displayManager.sddm.enable = true;
   services.xserver.desktopManager.plasma5.enable = true;
 
   # Configure keymap in X11
   services.xserver = {
-    layout = "us";
-    xkbVariant = "";
+    xkb.layout = "us";
+    xkb.variant = "";
   };
 
   # Enable CUPS to print documents.