diff --git a/CMakeLists.txt b/CMakeLists.txt
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -7,18 +7,19 @@
 find_package(ECM ${KF5_MIN_VERSION} REQUIRED CONFIG)
 set(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} ${ECM_MODULE_PATH} ${ECM_KDE_MODULE_DIR})
 
-find_package(Qt5 ${QT_MIN_VERSION} REQUIRED NO_MODULE COMPONENTS Widgets )
+find_package(Qt5 ${QT_MIN_VERSION} REQUIRED NO_MODULE COMPONENTS Gui Widgets)
 find_package(KF5 ${KF5_MIN_VERSION} REQUIRED COMPONENTS
+    Completion
     Config
     ConfigWidgets
     CoreAddons
     Crash
     DBusAddons
+    DocTools
     I18n
     KDELibs4Support
     KIO
     WidgetsAddons
-    WindowSystem
     XmlGui
 )