diff --git a/pkgs/desktops/kde-5/plasma-5.6/khelpcenter.nix b/pkgs/desktops/kde-5/plasma-5.6/khelpcenter.nix
index 6ba860b9dfb..3ded239b09b 100644
--- a/pkgs/desktops/kde-5/plasma-5.6/khelpcenter.nix
+++ b/pkgs/desktops/kde-5/plasma-5.6/khelpcenter.nix
@@ -10,10 +10,10 @@ plasmaPackage {
     kdoctools
     makeQtWrapper
   ];
-  buildInputs = [
-    kconfig kcoreaddons kdbusaddons kinit kcmutils kservice
+  propagatedBuildInputs = [
+    kdelibs4support khtml ki18n kconfig kcoreaddons kdbusaddons kinit kcmutils
+    kservice
   ];
-  propagatedBuildInputs = [ kdelibs4support khtml ki18n ];
   postInstall = ''
     wrapQtProgram "$out/bin/khelpcenter"
   '';