diff --git a/Libraries/vendor/core/whatwg-fetch.js b/Libraries/vendor/core/whatwg-fetch.js
index febc54dac8dd84..19591001401409 100644
--- a/Libraries/vendor/core/whatwg-fetch.js
+++ b/Libraries/vendor/core/whatwg-fetch.js
@@ -516,6 +516,10 @@
         xhr.withCredentials = false;
       }
 
+      if ('responseType' in xhr && support.blob) {
+        xhr.responseType = 'blob'
+      }
+
       request.headers.forEach(function(value, name) {
         xhr.setRequestHeader(name, value);
       });