diff --git a/lib/fs.js b/lib/fs.js
index 32369c009ae2cb..add234420ec7a7 100644
--- a/lib/fs.js
+++ b/lib/fs.js
@@ -1895,8 +1895,11 @@ util.inherits(SyncWriteStream, Stream);
 
 
 // Export
-fs.SyncWriteStream = SyncWriteStream;
-
+Object.defineProperty(fs, 'SyncWriteStream', {
+    configurable: true,
+    writable: true,
+    value: SyncWriteStream
+});
 
 SyncWriteStream.prototype.write = function(data, arg1, arg2) {
   var encoding, cb;