diff --git a/KF5PlasmaConfig.cmake.in b/KF5PlasmaConfig.cmake.in
--- a/KF5PlasmaConfig.cmake.in
+++ b/KF5PlasmaConfig.cmake.in
@@ -18,5 +18,6 @@
 find_dependency(Qt5Gui "@REQUIRED_QT_VERSION@")
 find_dependency(KF5Package "@KF5_DEP_VERSION@")
 find_dependency(KF5Service "@KF5_DEP_VERSION@")
+find_dependency(KF5WindowSystem "@KF5_DEP_VERSION@")
 
 include("${CMAKE_CURRENT_LIST_DIR}/KF5PlasmaMacros.cmake")