From ca167898a55faf382f2c59147e401f621473e76c Mon Sep 17 00:00:00 2001
From: MuK IT GmbH <mathias.markl@mukit.at>
Date: Tue, 6 Nov 2018 11:36:45 +0000
Subject: [PATCH] publish muk_web_utils - 12.0

---
 muk_web_utils/static/src/js/core/dropzone.js | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/muk_web_utils/static/src/js/core/dropzone.js b/muk_web_utils/static/src/js/core/dropzone.js
index b5a1057..af7a86d 100644
--- a/muk_web_utils/static/src/js/core/dropzone.js
+++ b/muk_web_utils/static/src/js/core/dropzone.js
@@ -95,7 +95,9 @@ var FileDropzoneMixin = _.extend({}, DropzoneMixin, {
 		return window.File && window.FileReader && window.FileList && window.Blob;
 	},
 	_handleDrag: function(event) {
-		event.originalEvent.dataTransfer.dropEffect = 'copy';
+	    if(event.originalEvent.dataTransfer) {
+	    	event.originalEvent.dataTransfer.dropEffect = 'copy';
+    	}
 	},
 });