diff --git a/index.html b/index.html
index 0ab91b63..0b950397 100644
--- a/index.html
+++ b/index.html
@@ -8063,6 +8063,6 @@
     <script defer src="modules/io/save.js?v=1.99.00"></script>
     <script defer src="modules/io/load.js?v=1.99.07"></script>
     <script defer src="modules/io/cloud.js?v=1.99.00"></script>
-    <script defer src="modules/io/export.js?v=1.99.13"></script>
+    <script defer src="modules/io/export.js?v=1.99.14"></script>
   </body>
 </html>
diff --git a/modules/io/export.js b/modules/io/export.js
index 71c801be..15e2b020 100644
--- a/modules/io/export.js
+++ b/modules/io/export.js
@@ -456,7 +456,7 @@ function saveGeoJsonCells() {
       const [x, y] = vertices.p[vertex];
       return getCoordinates(x, y, 4);
     });
-    return [...coordinates, coordinates[0]];
+    return [[...coordinates, coordinates[0]]];
   }
 
   cells.i.forEach(i => {
diff --git a/versioning.js b/versioning.js
index 253455d8..72c8f037 100644
--- a/versioning.js
+++ b/versioning.js
@@ -1,7 +1,7 @@
 "use strict";
 
 // version and caching control
-const version = "1.99.13"; // generator version, update each time
+const version = "1.99.14"; // generator version, update each time
 
 {
   document.title += " v" + version;