diff --git a/lib/archivers/zip/zip-archive-output-stream.js b/lib/archivers/zip/zip-archive-output-stream.js
index 0b17dd49..35e4a68f 100644
--- a/lib/archivers/zip/zip-archive-output-stream.js
+++ b/lib/archivers/zip/zip-archive-output-stream.js
@@ -282,7 +282,7 @@ ZipArchiveOutputStream.prototype._writeCentralFileHeader = function(ae) {
       zipUtil.getEightBytes(offsets.file)
     ], 28);
 
-    ae.setExtra(extraBuf);
+    ae.setExtra(Buffer.concat([ae.getExtra(), extraBuf]));
   }
 
   // signature