diff --git a/modules/services/x11/xserver/default.nix b/modules/services/x11/xserver/default.nix
index 3e49420778e..d32309aa4fa 100644
--- a/modules/services/x11/xserver/default.nix
+++ b/modules/services/x11/xserver/default.nix
@@ -280,7 +280,7 @@ let
 
     environment.x11Packages = mkOption {
       default = [];
-      type = types.list types.packages;
+      type = types.list types.package;
       description = "
         List of packages added to the system when the xserver is
         activated. (<option>services.xserver.enable</option>).
diff --git a/modules/services/x11/xserver/desktop-managers/kde-environment.nix b/modules/services/x11/xserver/desktop-managers/kde-environment.nix
index 3a4b8b22d36..51489a1d16b 100644
--- a/modules/services/x11/xserver/desktop-managers/kde-environment.nix
+++ b/modules/services/x11/xserver/desktop-managers/kde-environment.nix
@@ -25,7 +25,7 @@ let
       kdePackages = mkOption {
         default = [];
         example = [ pkgs.kde42.kdegames ];
-        type = types.list types.packages;
+        type = types.list types.package;
         description = ''
           Additional KDE packages to be used when you use KDE as a desktop
           manager.  By default, you only get the KDE base packages.