diff --git a/sw-kiosk.nix b/sw-kiosk.nix
index 741622e..5c7d95b 100644
--- a/sw-kiosk.nix
+++ b/sw-kiosk.nix
@@ -64,9 +64,8 @@
     GDK_DPI_SCALE = "0.5";
 
     # Make GLib / gsettings actually see schemas
-    XDG_DATA_DIRS = inputs.nixpkgs.lib.mkForce
-      "/run/current-system/sw/share:"
-      + "/run/current-system/sw/share/gsettings-schemas/${pkgs.gsettings-desktop-schemas.name}";
+    GSETTINGS_SCHEMA_DIR =
+      "/run/current-system/sw/share/gsettings-schemas/${pkgs.gsettings-desktop-schemas.name}/glib-2.0/schemas";
   };
 
   systemd.user.services."chromium-kiosk" = {