diff --git a/lib/bindings/mock.js b/lib/bindings/mock.js
index 32f943364..711acf0bf 100644
--- a/lib/bindings/mock.js
+++ b/lib/bindings/mock.js
@@ -17,7 +17,7 @@ class MockBinding extends BaseBinding {
     this.isOpen = false;
     this.port = null;
     this.lastWrite = null;
-    this.recording = new Buffer(0);
+    this.recording = Buffer.alloc(0);
     this.writeOperation = null; // in flight promise or null
   }