diff --git a/reactos/cmake/compilerflags.cmake b/reactos/cmake/compilerflags.cmake
index d6928a19103..55bd78dd9e1 100644
--- a/reactos/cmake/compilerflags.cmake
+++ b/reactos/cmake/compilerflags.cmake
@@ -1,31 +1,22 @@
 
-macro(add_compiler_flags)
+function(add_compiler_flags)
     # Adds the compiler flag to both CMAKE_C_FLAGS and CMAKE_CXX_FLAGS
     foreach(flag ${ARGN})
         set(flags_list "${flags_list} ${flag}")
     endforeach()
 
-    if(CMAKE_C_FLAGS)
-        set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${flags_list}")
-    else()
-        set(CMAKE_C_FLAGS ${flags_list})
-    endif()
+	set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${flags_list}" PARENT_SCOPE)
+	set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${flags_list}" PARENT_SCOPE)
+endfunction()
 
-    if(CMAKE_CXX_FLAGS)
-        set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${flags_list}")
-    else()
-        set(CMAKE_CXX_FLAGS ${flags_list})
-    endif()
-endmacro()
-
-macro(add_linkerflag MODULE _flag)
+function(add_linkerflag MODULE _flag)
     set(NEW_LINKER_FLAGS ${_flag})
     get_target_property(LINKER_FLAGS ${MODULE} LINK_FLAGS)
     if(LINKER_FLAGS)
         set(NEW_LINKER_FLAGS "${LINKER_FLAGS} ${NEW_LINKER_FLAGS}")
     endif()
     set_target_properties(${MODULE} PROPERTIES LINK_FLAGS ${NEW_LINKER_FLAGS})
-endmacro()
+endfunction()
 
 macro(set_unicode)
    add_definitions(-DUNICODE -D_UNICODE)