diff --git a/frontend-js/src/main/js/ServerConnector.js b/frontend-js/src/main/js/ServerConnector.js
index c08e3bddbecf4019f15b05e46b0213cbc69824bc..4ff0fc4f086e3d63e29ff7cb22a449573e513db7 100644
--- a/frontend-js/src/main/js/ServerConnector.js
+++ b/frontend-js/src/main/js/ServerConnector.js
@@ -1728,7 +1728,7 @@ ServerConnector.addOverlayFromString = function (name, content) {
       return result;
     });
   });
-}
+};
 
 ServerConnector.updateOverlay = function (overlay) {
   var self = this;
@@ -1877,7 +1877,7 @@ ServerConnector.getReferenceGenome = function (params) {
 };
 
 ServerConnector.uploadFile = function (params) {
-  var CHUNK_SIZE = 65535;
+  var CHUNK_SIZE = 65535 * 8;
   var self = this;
   var data = new Uint8Array(params.content);
   var filterParams = {