diff --git a/src/Runtime/StdString.cs b/src/Runtime/StdString.cs
index cd4cd504..0e40d008 100644
--- a/src/Runtime/StdString.cs
+++ b/src/Runtime/StdString.cs
@@ -29,10 +29,8 @@ namespace Std
     [StructLayout(LayoutKind.Sequential)]
     public struct String : ICppMarshal
     {
-#if MSVC || LIBCXX
         public int _Mysize;
         public int _Myres;
-#endif
 
         public int Length
         {