diff --git a/lib/buffer.js b/lib/buffer.js
index e089aceb91f..afe5677b348 100644
--- a/lib/buffer.js
+++ b/lib/buffer.js
@@ -475,7 +475,7 @@ Buffer.prototype.fill = function fill(value, start, end) {
 
 Buffer.concat = function(list, length) {
   if (!Array.isArray(list)) {
-    throw new TypeError('Usage: Buffer.concat(list, [length])');
+    throw new TypeError('list argument must be an Array of Buffers.');
   }
 
   if (list.length === 0) {