diff --git a/src/V3Options.h b/src/V3Options.h
index 55cdac36a..4c6272b3d 100644
--- a/src/V3Options.h
+++ b/src/V3Options.h
@@ -267,7 +267,11 @@ private:
     bool m_relativeIncludes = false; // main switch: --relative-includes
     bool m_reportUnoptflat = false; // main switch: --report-unoptflat
     bool m_savable = false;         // main switch: --savable
+#ifdef _MSC_VER
+    bool m_std = false;             // main switch: --std
+#else
     bool m_std = true;              // main switch: --std
+#endif
     bool m_structsPacked = false;   // main switch: --structs-packed
     bool m_systemC = false;         // main switch: --sc: System C instead of simple C++
     bool m_stats = false;           // main switch: --stats