diff --git a/kde-modules/KDEFrameworkCompilerSettings.cmake b/kde-modules/KDEFrameworkCompilerSettings.cmake
--- a/kde-modules/KDEFrameworkCompilerSettings.cmake
+++ b/kde-modules/KDEFrameworkCompilerSettings.cmake
@@ -67,6 +67,12 @@
 
 if (CMAKE_CXX_COMPILER_ID STREQUAL "GNU")
    if (NOT CMAKE_CXX_COMPILER_VERSION VERSION_LESS "5.0.0")
-      set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wsuggest-override" )
+      set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wsuggest-override -Wlogical-op -Wzero-as-null-pointer-constant" )
+   endif()
+endif()
+
+if (CMAKE_CXX_COMPILER_ID STREQUAL "Clang")
+   if (NOT CMAKE_CXX_COMPILER_VERSION VERSION_LESS "5.0.0")
+      set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wzero-as-null-pointer-constant" )
    endif()
 endif()