diff --git a/src/lib/tvgCommon.h b/src/lib/tvgCommon.h
index 259492ba..b1c58618 100644
--- a/src/lib/tvgCommon.h
+++ b/src/lib/tvgCommon.h
@@ -48,7 +48,7 @@ using namespace tvg;
     #define TVG_FALLTHROUGH
 #endif
 
-#if defined(__clang__) && !defined(__EMSCRIPTEN__)
+#if defined(_MSC_VER) && defined(__clang__)
     #define strncpy strncpy_s
     #define strdup _strdup
 #endif
diff --git a/src/savers/tvg/tvgTvgSaver.cpp b/src/savers/tvg/tvgTvgSaver.cpp
index 46ad28e2..9450d80e 100644
--- a/src/savers/tvg/tvgTvgSaver.cpp
+++ b/src/savers/tvg/tvgTvgSaver.cpp
@@ -32,7 +32,7 @@
 
 static FILE* _fopen(const char* filename, const char* mode)
 {
-#if defined(__clang__) && !defined(__EMSCRIPTEN__)
+#if defined(_MSC_VER) && defined(__clang__)
     FILE *fp;
     auto err = fopen_s(&fp, filename, mode);
     if (err != 0) return nullptr;