diff --git a/Modules/Platform/Windows-MSVC.cmake b/Modules/Platform/Windows-MSVC.cmake
index 3a38d8fe7..f9df6d8a6 100644
--- a/Modules/Platform/Windows-MSVC.cmake
+++ b/Modules/Platform/Windows-MSVC.cmake
@@ -107,7 +107,7 @@ if(NOT MSVC_VERSION)
   endif()
 endif()
 
-if(MSVC_C_ARCHITECTURE_ID MATCHES 64)
+if(MSVC_C_ARCHITECTURE_ID MATCHES 64 OR MSVC_CXX_ARCHITECTURE_ID MATCHES 64)
   set(CMAKE_CL_64 1)
 else()
   set(CMAKE_CL_64 0)