diff --git a/lib/buffer.js b/lib/buffer.js
index e40b81a693c9fd..84f63a57df42c9 100644
--- a/lib/buffer.js
+++ b/lib/buffer.js
@@ -1332,3 +1332,5 @@ Buffer.prototype.swap64 = function swap64() {
   }
   return swap64n(this);
 };
+
+Buffer.prototype.toLocaleString = Buffer.prototype.toString;
diff --git a/test/parallel/test-buffer-alloc.js b/test/parallel/test-buffer-alloc.js
index 00b63848d4e2d4..57bc8715974032 100644
--- a/test/parallel/test-buffer-alloc.js
+++ b/test/parallel/test-buffer-alloc.js
@@ -1502,3 +1502,9 @@ assert.throws(() => Buffer.alloc({ valueOf: () => 1 }),
               /"size" argument must be a number/);
 assert.throws(() => Buffer.alloc({ valueOf: () => -1 }),
               /"size" argument must be a number/);
+
+assert.strictEqual(Buffer.prototype.toLocaleString, Buffer.prototype.toString);
+{
+  const buf = Buffer.from('test');
+  assert.strictEqual(buf.toLocaleString(), buf.toString());
+}