diff --git a/flake.nix b/flake.nix
index 812f217..eb24b0a 100644
--- a/flake.nix
+++ b/flake.nix
@@ -86,8 +86,8 @@
               { pkgs, ... }:
               {
                 home.packages = [
-                  zut-calendar.packages.${pkgs.system}.default
-                  zutui.packages.${pkgs.system}.default
+                  zut-calendar.packages.${pkgs.stdenv.hostPlatform.system}.default
+                  zutui.packages.${pkgs.stdenv.hostPlatform.system}.default
                 ];
               }
             )
diff --git a/modules/gtk.nix b/modules/gtk.nix
index 11e1da6..4536cbf 100644
--- a/modules/gtk.nix
+++ b/modules/gtk.nix
@@ -4,6 +4,7 @@
   gtk = {
     enable = true;
     colorScheme = "dark";
+    gtk4.theme = null;
   };
 
   dconf = {
diff --git a/modules/xdg.nix b/modules/xdg.nix
index 3311814..c6eb0ca 100644
--- a/modules/xdg.nix
+++ b/modules/xdg.nix
@@ -59,5 +59,6 @@ in
     videos = "$HOME/Video";
     templates = null;
     publicShare = null;
+    setSessionVariables = true;
   };
 }