diff --git a/lib/ed25519.js b/lib/ed25519.js
index c7c992988..484cfd0dd 100644
--- a/lib/ed25519.js
+++ b/lib/ed25519.js
@@ -147,7 +147,7 @@ ed25519.verify = function(options) {
 
 function messageToNativeBuffer(options) {
   var message = options.message;
-  if(message instanceof Uint8Array) {
+  if(message instanceof Uint8Array || message instanceof NativeBuffer) {
     return message;
   }