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")
diff --git a/src/plasma/CMakeLists.txt b/src/plasma/CMakeLists.txt
--- a/src/plasma/CMakeLists.txt
+++ b/src/plasma/CMakeLists.txt
@@ -113,6 +113,7 @@
     KF5::Service # For kplugininfo.h and kservice.h
     Qt5::Gui
     KF5::Package
+    KF5::WindowSystem #compositingActive
 PRIVATE
     Qt5::Sql
     Qt5::Svg
@@ -122,7 +123,6 @@
     KF5::I18n
     KF5::KIOCore    #ServiceJob
     KF5::KIOWidgets  #KRun
-    KF5::WindowSystem #compositingActive
     KF5::Declarative #runtimePlatform
     KF5::XmlGui   #KActionCollection
     KF5::GlobalAccel #Applet::setGlobalShortcut