diff --git a/client/js/azure/uploader.basic.js b/client/js/azure/uploader.basic.js
index <HASH>..<HASH> 100644
--- a/client/js/azure/uploader.basic.js
+++ b/client/js/azure/uploader.basic.js
@@ -194,6 +194,7 @@
                 }),
                 getSas = new qq.azure.GetSas({
                     cors: this._options.cors,
+                    customHeaders: this._options.signature.customHeaders,
                     endpointStore: {
                         get: function() {
                             return self._options.signature.endpoint;
fix(azure/uploader.basic): customHeaders omitted from delete SAS

closes #<I>