diff --git a/reactos/cmake/msvc.cmake b/reactos/cmake/msvc.cmake
index 4a5a437c38d..b3d6aaa00dd 100644
--- a/reactos/cmake/msvc.cmake
+++ b/reactos/cmake/msvc.cmake
@@ -46,8 +46,9 @@ add_compile_flags("/wd4290")
 # - C4098: void function returning a value
 # - C4129: unrecognized escape sequence
 # - TODO: C4133: incompatible types
+# - C4229: modifiers on data are ignored
 # - C4700: uninitialized variable usage
-add_compile_flags("/we4022 /we4047 /we4098 /we4129 /we4700")
+add_compile_flags("/we4022 /we4047 /we4098 /we4129 /we4229 /we4700")
 
 # Debugging
 #if(${CMAKE_BUILD_TYPE} STREQUAL "Debug")