diff --git a/llvm/include/llvm/ADT/None.h b/llvm/include/llvm/ADT/None.h
index 1a66be4097df40..b3dc18089683fa 100644
--- a/llvm/include/llvm/ADT/None.h
+++ b/llvm/include/llvm/ADT/None.h
@@ -19,8 +19,7 @@
 namespace llvm {
 /// A simple null object to allow implicit construction of Optional<T>
 /// and similar types without having to spell out the specialization's name.
-// (constant value 1 in an attempt to workaround MSVC build issue... )
-enum class NoneType { None = 1 };
+enum class NoneType { None };
 const NoneType None = NoneType::None;
 }