diff --git a/bindings/dotnet/src/Sigar.cs b/bindings/dotnet/src/Sigar.cs
index c5fbaf79..fa37d010 100644
--- a/bindings/dotnet/src/Sigar.cs
+++ b/bindings/dotnet/src/Sigar.cs
@@ -77,7 +77,6 @@ namespace Hyperic.Sigar {
         public readonly ulong Shared;
         private readonly ulong NA_buffer;
         private readonly ulong NA_cached;
-        private readonly ulong NA_user;
 
         [DllImport(Sigar.LIBSIGAR)]
         private static extern int sigar_mem_get(IntPtr sigar, IntPtr mem);