diff --git a/include/libassert/assert.hpp b/include/libassert/assert.hpp
index 17bb44f1..60b8fadf 100644
--- a/include/libassert/assert.hpp
+++ b/include/libassert/assert.hpp
@@ -1366,7 +1366,7 @@ namespace libassert::detail {
  #pragma warning(pop)
 #endif
 
-#if LIBASSERT_IS_CLANG || LIBASSERT_IS_GCC || (defined(_MSVC_TRADITIONAL) && _MSVC_TRADITIONAL == 0)
+#if LIBASSERT_IS_CLANG || LIBASSERT_IS_GCC || !LIBASSERT_NON_CONFORMANT_MSVC_PREPROCESSOR
  // Macro mapping utility by William Swanson https://github.com/swansontec/map-macro/blob/master/map.h
  #define LIBASSERT_EVAL0(...) __VA_ARGS__
  #define LIBASSERT_EVAL1(...) LIBASSERT_EVAL0(LIBASSERT_EVAL0(LIBASSERT_EVAL0(__VA_ARGS__)))
@@ -1719,7 +1719,7 @@ namespace libassert {
 // non-prefixed versions
 
 #ifndef LIBASSERT_PREFIX_ASSERTIONS
- #if LIBASSERT_IS_CLANG || LIBASSERT_IS_GCC || (defined(_MSVC_TRADITIONAL) && _MSVC_TRADITIONAL == 0)
+ #if LIBASSERT_IS_CLANG || LIBASSERT_IS_GCC || !LIBASSERT_NON_CONFORMANT_MSVC_PREPROCESSOR
   #define DEBUG_ASSERT(...) LIBASSERT_DEBUG_ASSERT(__VA_ARGS__)
   #define ASSERT(...) LIBASSERT_ASSERT(__VA_ARGS__)
   #define ASSUME(...) LIBASSERT_ASSUME(__VA_ARGS__)
diff --git a/include/libassert/platform.hpp b/include/libassert/platform.hpp
index 45d75dfb..5a717c8d 100644
--- a/include/libassert/platform.hpp
+++ b/include/libassert/platform.hpp
@@ -183,13 +183,18 @@
     #define LIBASSERT_GCC_ISNT_STUPID 1
 #endif
 
+#if defined(_MSVC_TRADITIONAL) && _MSVC_TRADITIONAL
+ #define LIBASSERT_NON_CONFORMANT_MSVC_PREPROCESSOR true
+#else
+ #define LIBASSERT_NON_CONFORMANT_MSVC_PREPROCESSOR false
+#endif
 
-#if LIBASSERT_IS_GCC || LIBASSERT_STD_VER >= 20
-    // __VA_OPT__ needed for GCC, https://gcc.gnu.org/bugzilla/show_bug.cgi?id=44317
-    #define LIBASSERT_VA_ARGS(...) __VA_OPT__(,) __VA_ARGS__
+#if (LIBASSERT_IS_GCC || LIBASSERT_STD_VER >= 20) && !LIBASSERT_NON_CONFORMANT_MSVC_PREPROCESSOR
+ // __VA_OPT__ needed for GCC, https://gcc.gnu.org/bugzilla/show_bug.cgi?id=44317
+ #define LIBASSERT_VA_ARGS(...) __VA_OPT__(,) __VA_ARGS__
 #else
-    // clang properly eats the comma with ##__VA_ARGS__
-    #define LIBASSERT_VA_ARGS(...) , ##__VA_ARGS__
+ // clang properly eats the comma with ##__VA_ARGS__
+ #define LIBASSERT_VA_ARGS(...) , ##__VA_ARGS__
 #endif