diff --git a/CMakeLists.txt b/CMakeLists.txt
index c54c7ebe..e395ad42 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -4,7 +4,7 @@ include(CheckIncludeFiles)
 include(CheckFunctionExists)
 include(GenerateExportHeader)
 
-find_package(KDE4 4.19.0 REQUIRED)
+find_package(KDE4 4.21.0 REQUIRED)
 include(KDE4Defaults)
 
 find_package(ZLIB)
diff --git a/appveyor.yml b/appveyor.yml
index 12a6a15b..85c7a522 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -1,4 +1,4 @@
-version: 4.20.0-{branch}-{build}
+version: 4.21.0-{branch}-{build}
 image: Ubuntu2004
 clone_depth: 1
 cache:
diff --git a/systemsettings/CMakeLists.txt b/systemsettings/CMakeLists.txt
index c6dc3e69..e82812b2 100644
--- a/systemsettings/CMakeLists.txt
+++ b/systemsettings/CMakeLists.txt
@@ -1,13 +1,5 @@
 PROJECT(systemsettings)
 
-IF(CMAKE_SOURCE_DIR STREQUAL "${CMAKE_CURRENT_SOURCE_DIR}")    
-
-    FIND_PACKAGE(KDE4 REQUIRED)
-    INCLUDE(KDE4Defaults)
-    ADD_DEFINITIONS(${QT_DEFINITIONS} ${KDE4_DEFINITIONS})
-
-ENDIF(CMAKE_SOURCE_DIR STREQUAL "${CMAKE_CURRENT_SOURCE_DIR}")
-
 INCLUDE_DIRECTORIES (
     ${CMAKE_CURRENT_SOURCE_DIR}/core
     ${CMAKE_CURRENT_BINARY_DIR}/core