diff --git a/Modules/Platform/Windows-icl.cmake b/Modules/Platform/Windows-icl.cmake
index 9088cc7d1..278a7573e 100644
--- a/Modules/Platform/Windows-icl.cmake
+++ b/Modules/Platform/Windows-icl.cmake
@@ -58,16 +58,16 @@ SET(CMAKE_CREATE_CONSOLE_EXE /subsystem:console)
 # default to Debug builds
 #SET(CMAKE_BUILD_TYPE_INIT Debug)
 SET(CMAKE_BUILD_TYPE_INIT Release)
-SET (CMAKE_CXX_FLAGS_INIT "/W3 /Zm1000 /GX /GR")
-SET (CMAKE_CXX_FLAGS_DEBUG_INIT "/MDd /Zi /Od /GZ")
-SET (CMAKE_CXX_FLAGS_MINSIZEREL_INIT "/MD /O1")
-SET (CMAKE_CXX_FLAGS_RELEASE_INIT "/MD /O2")
-SET (CMAKE_CXX_FLAGS_RELWITHDEBINFO_INIT "/MD /Zi /O2")
-SET (CMAKE_C_FLAGS_INIT "/W3 /Zm1000")
-SET (CMAKE_C_FLAGS_DEBUG_INIT "/MDd /Zi /Od /GZ")
-SET (CMAKE_C_FLAGS_MINSIZEREL_INIT "/MD /O1")
-SET (CMAKE_C_FLAGS_RELEASE_INIT "/MD /O2")
-SET (CMAKE_C_FLAGS_RELWITHDEBINFO_INIT "/MD /Zi /O2")
+SET (CMAKE_CXX_FLAGS_INIT "/DWIN32 /D_WINDOWS /W3 /Zm1000 /GX /GR")
+SET (CMAKE_CXX_FLAGS_DEBUG_INIT "/D_DEBUG /MDd /Zi /Od /GZ")
+SET (CMAKE_CXX_FLAGS_MINSIZEREL_INIT "/DNDEBUG /MD /O1")
+SET (CMAKE_CXX_FLAGS_RELEASE_INIT "/DNDEBUG /MD /O2")
+SET (CMAKE_CXX_FLAGS_RELWITHDEBINFO_INIT "/DNDEBUG /MD /Zi /O2")
+SET (CMAKE_C_FLAGS_INIT "/DWIN32 /D_WINDOWS /W3 /Zm1000")
+SET (CMAKE_C_FLAGS_DEBUG_INIT "/D_DEBUG /MDd /Zi /Od /GZ")
+SET (CMAKE_C_FLAGS_MINSIZEREL_INIT "/DNDEBUG /MD /O1")
+SET (CMAKE_C_FLAGS_RELEASE_INIT "/DNDEBUG /MD /O2")
+SET (CMAKE_C_FLAGS_RELWITHDEBINFO_INIT "/DNDEBUG /MD /Zi /O2")
 
 
 SET(CMAKE_C_STANDARD_LIBRARIES_INIT "kernel32.lib user32.lib gdi32.lib winspool.lib comdlg32.lib advapi32.lib shell32.lib ole32.lib oleaut32.lib uuid.lib kernel32.lib user32.lib gdi32.lib winspool.lib comdlg32.lib advapi32.lib shell32.lib ole32.lib oleaut32.lib uuid.lib")