diff --git a/pkgs/desktops/plasma-5/kactivitymanagerd.nix b/pkgs/desktops/plasma-5/kactivitymanagerd.nix
index d2870c27e659..5c856b9d39c2 100644
--- a/pkgs/desktops/plasma-5/kactivitymanagerd.nix
+++ b/pkgs/desktops/plasma-5/kactivitymanagerd.nix
@@ -1,12 +1,13 @@
 {
-  mkDerivation,
+  mkDerivation, lib,
   extra-cmake-modules,
   boost, kconfig, kcoreaddons, kdbusaddons, ki18n, kio, kglobalaccel,
-  kwindowsystem, kxmlgui, kcrash
+  kwindowsystem, kxmlgui, kcrash, qtbase
 }:
 
 mkDerivation {
   name = "kactivitymanagerd";
+  meta.broken = lib.versionOlder qtbase.version "5.15.0";
   nativeBuildInputs = [ extra-cmake-modules ];
   buildInputs = [
     boost kconfig kcoreaddons kdbusaddons kglobalaccel ki18n kio kwindowsystem