diff --git a/lib/fs.js b/lib/fs.js
index 90554eab484a9a..60c74c4a10a256 100644
--- a/lib/fs.js
+++ b/lib/fs.js
@@ -1878,8 +1878,11 @@ 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;