diff --git a/discover.spec b/discover.spec
index 5392ba1..d934c34 100644
--- a/discover.spec
+++ b/discover.spec
@@ -46,6 +46,7 @@ BuildRequires:  cmake(KF5NewStuff)
 BuildRequires:  cmake(KF5Notifications)
 BuildRequires:  cmake(KF5Plasma)
 BuildRequires:  cmake(KF5TextWidgets)
+BuildRequires:  cmake(KF5WindowSystem)
 BuildRequires:  cmake(Qca-qt5)
 BuildRequires:  cmake(Qt5Concurrent)
 BuildRequires:  cmake(Qt5DBus)