diff --git a/pkgs/desktops/kde-5/plasma-5.6/polkit-kde-agent.nix b/pkgs/desktops/kde-5/plasma-5.6/polkit-kde-agent.nix
index 3fc3a441ac34..68bb3a9ef3dc 100644
--- a/pkgs/desktops/kde-5/plasma-5.6/polkit-kde-agent.nix
+++ b/pkgs/desktops/kde-5/plasma-5.6/polkit-kde-agent.nix
@@ -17,15 +17,8 @@ plasmaPackage {
   nativeBuildInputs = [
     extra-cmake-modules
   ];
-  buildInputs = [
-    kdbusaddons
-    kwidgetsaddons
-    kcoreaddons
-    kcrash
-    kconfig
-    kiconthemes
-    knotifications
-    polkit-qt
+  propagatedBuildInputs = [
+    kdbusaddons kwidgetsaddons kcoreaddons kcrash kconfig ki18n kiconthemes
+    knotifications kwindowsystem polkit-qt
   ];
-  propagatedBuildInputs = [ ki18n kwindowsystem ];
 }