1 files changed, 2 insertions, 1 deletions
diff --git a/buffer.h b/buffer.h
index 17e1154..e8c33e6 100644
--- a/buffer.h
+++ b/buffer.h
@@ -65,7 +65,8 @@ protected:
   friend class TunDevice;
   friend class UDPPacketSource;
   friend class AesIcmCypher;
-  friend class KeyDerivation;   // 
+  friend class KeyDerivation;   //
+  friend class Mpi;
 
   u_int8_t *buf_;
   u_int32_t length_;