diff --git a/reactos/cmake/CMakeMacros.cmake b/reactos/cmake/CMakeMacros.cmake
index ea60b234d60..68ea72a78be 100644
--- a/reactos/cmake/CMakeMacros.cmake
+++ b/reactos/cmake/CMakeMacros.cmake
@@ -2,10 +2,7 @@
 macro(set_cpp)
     set(IS_CPP 1)
     if(MSVC)
-        include_directories(BEFORE ${REACTOS_SOURCE_DIR}/include/c++/stlport)
-        add_definitions(
-            -DNATIVE_CPP_INCLUDE=${REACTOS_SOURCE_DIR}/include/c++
-            -DNATIVE_C_INCLUDE=${REACTOS_SOURCE_DIR}/include/crt)
+        include_directories(${REACTOS_SOURCE_DIR}/include/c++)
     endif()
 endmacro()