diff --git a/wrappers/csharp/Native.cs b/wrappers/csharp/Native.cs
index 6795aa41d..6518f8e75 100644
--- a/wrappers/csharp/Native.cs
+++ b/wrappers/csharp/Native.cs
@@ -3,7 +3,7 @@ namespace Devolutions.Cryptography
     using System;
     using System.Runtime.InteropServices;
   
-#if WIN
+#if RDM
     using System.IO;
     using System.Reflection;
 #endif