diff --git a/src/web/app/boot.js b/src/web/app/boot.js
index 44ac6bac2e3033ccae4752c7015779b009657ae6..aed21b086ffae125541a6a537932a7f734f13796 100644
--- a/src/web/app/boot.js
+++ b/src/web/app/boot.js
@@ -39,7 +39,7 @@ if (HTMLCollection.prototype.forEach === undefined) {
 if (FileList.prototype.forEach === undefined) {
 	FileList.prototype.forEach = Array.prototype.forEach;
 }
-if (DataTransferItemList.prototype.forEach === undefined) {
+if (DataTransferItemList && DataTransferItemList.prototype.forEach === undefined) {
 	DataTransferItemList.prototype.forEach = Array.prototype.forEach;
 }