diff --git a/pkgs/desktops/plasma-5/xdg-desktop-portal-kde.nix b/pkgs/desktops/plasma-5/xdg-desktop-portal-kde.nix
index fc77e163e8f..ae1ee50a121 100644
--- a/pkgs/desktops/plasma-5/xdg-desktop-portal-kde.nix
+++ b/pkgs/desktops/plasma-5/xdg-desktop-portal-kde.nix
@@ -1,7 +1,7 @@
 {
   mkDerivation,
   extra-cmake-modules, gettext, kdoctools, python,
-  kcoreaddons, knotifications, kwayland, kwidgetsaddons,
+  kcoreaddons, knotifications, kwayland, kwidgetsaddons, kwindowsystem,
   cups, pcre, pipewire
 }:
 
@@ -10,6 +10,6 @@ mkDerivation {
   nativeBuildInputs = [ extra-cmake-modules gettext kdoctools python ];
   buildInputs = [
     cups pcre pipewire
-    kcoreaddons knotifications kwayland kwidgetsaddons
+    kcoreaddons knotifications kwayland kwidgetsaddons kwindowsystem
   ];
 }