diff --git a/lib/buffer.js b/lib/buffer.js
index 061ff7ebe440da..7902fc6fde5dcc 100644
--- a/lib/buffer.js
+++ b/lib/buffer.js
@@ -276,7 +276,7 @@ function assertSize(size) {
  */
 Buffer.alloc = function alloc(size, fill, encoding) {
   assertSize(size);
-  if (fill !== undefined && size > 0) {
+  if (fill !== undefined && fill !== 0 && size > 0) {
     return _fill(createUnsafeBuffer(size), fill, encoding);
   }
   return new FastBuffer(size);