diff --git a/CMakeLists.txt b/CMakeLists.txt
index 0ae286a936..a3638c340f 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -64,6 +64,16 @@ find_package(KF5 CONFIG COMPONENTS Activities)
 # TODO: remove once the build system is completely cleaned
 find_package(KF5KDE4Support REQUIRED NO_MODULE)
 
+# HACK: remove after split
+if("${CMAKE_BINARY_DIR}" STREQUAL "${CMAKE_CURRENT_BINARY_DIR}")
+    # screensaver and ksmserver dbus interface
+    find_package(KSMServerDBusInterface CONFIG REQUIRED)
+    find_package(ScreenSaverDBusInterface CONFIG REQUIRED)
+else()
+    set(KSMSERVER_DBUS_INTERFACE ${ksmserver_SOURCE_DIR}/org.kde.KSMServerInterface.xml)
+    set(SCREENSAVER_DBUS_INTERFACE ${ksmserver_SOURCE_DIR}/screenlocker/dbus/org.freedesktop.ScreenSaver.xml)
+endif()
+
 if(${Qt5Gui_OPENGL_IMPLEMENTATION} STREQUAL "GL")
     find_package(OpenGL)
     set_package_properties(OpenGL PROPERTIES DESCRIPTION "The OpenGL libraries"
@@ -356,10 +366,8 @@ qt5_add_dbus_adaptor( kwin_KDEINIT_SRCS org.kde.KWin.xml dbusinterface.h KWin::D
 qt5_add_dbus_adaptor( kwin_KDEINIT_SRCS org.kde.kwin.Compositing.xml composite.h KWin::Compositor )
 qt5_add_dbus_adaptor( kwin_KDEINIT_SRCS org.kde.kwin.Effects.xml effects.h KWin::EffectsHandlerImpl )
 
-qt5_add_dbus_interface( kwin_KDEINIT_SRCS
-    ${ksmserver_SOURCE_DIR}/org.kde.KSMServerInterface.xml ksmserver_interface)
-qt5_add_dbus_interface( kwin_KDEINIT_SRCS
-    ${ksmserver_SOURCE_DIR}/screenlocker/dbus/org.freedesktop.ScreenSaver.xml screenlocker_interface)
+qt5_add_dbus_interface( kwin_KDEINIT_SRCS ${KSMSERVER_DBUS_INTERFACE} ksmserver_interface)
+qt5_add_dbus_interface( kwin_KDEINIT_SRCS ${SCREENSAVER_DBUS_INTERFACE} screenlocker_interface)
 
 qt5_add_resources( kwin_KDEINIT_SRCS resources.qrc )