diff --git a/lib/managed-upload.js b/lib/managed-upload.js
index 134fab7aa..c134f8080 100644
--- a/lib/managed-upload.js
+++ b/lib/managed-upload.js
@@ -245,6 +245,13 @@ WebFileReadStream.prototype._read = function _read(size) {
     that.file = null;
     that.readFileAndPush(size);
   };
+  this.reader.onerror = function onload(e) {
+    const error = e.srcElement && e.srcElement.error;
+    if (error) {
+      throw error;
+    }
+    throw e;
+  };
 
   if (this.start === 0) {
     this.reader.readAsArrayBuffer(this.file);