diff --git a/src/zip.js b/src/zip.js
index b8e89d85..77392e75 100644
--- a/src/zip.js
+++ b/src/zip.js
@@ -6,7 +6,14 @@ var write = require('./write'),
 module.exports = function(gj, options) {
 
     var zip = new JSZip(),
-        layers = zip.folder(options && options.folder ? options.folder : 'layers');
+        layers;
+
+    // if options.folder is set, zip to a folder with that name
+    if (options && options.folder && typeof options.folder === 'string') {
+        layers = zip.folder(options.folder);
+    } else {
+        layers = zip;
+    }
 
     [geojson.point(gj), geojson.line(gj), geojson.polygon(gj)]
         .forEach(function(l) {