diff --git a/include/cpp2util.h b/include/cpp2util.h
index b5d18a4b2f..4e2323e236 100644
--- a/include/cpp2util.h
+++ b/include/cpp2util.h
@@ -681,7 +681,7 @@ class out {
 //
 //-----------------------------------------------------------------------
 //
-#ifdef _MSC_VER
+#if defined(_MSC_VER) && !defined(__clang_major__)
     #define CPP2_FORCE_INLINE        __forceinline
     #define CPP2_FORCE_INLINE_LAMBDA [[msvc::forceinline]]
     #define CPP2_LAMBDA_NO_DISCARD