diff --git a/CMakeLists.txt b/CMakeLists.txt
index 982478cc7..a4c328fdd 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -193,8 +193,8 @@ if(MSVC)
     # Set warning level 3 instead of 4.
     string(REPLACE "/W3" "/W4" ${config} "${${config}}")
 
-    # Enable intrinsic functions, disable minimal rebuild, UTF-8 source.
-    set(${config} "${${config}} /Oi /Gm- /utf-8")
+    # Enable intrinsic functions, disable minimal rebuild, UTF-8 source, set __cplusplus version.
+    set(${config} "${${config}} /Oi /Gm- /utf-8 /Zc:__cplusplus")
   endforeach()
 
   # RelWithDebInfo is set to Ob1 instead of Ob2.