diff --git a/lib/form/dndupload.js b/lib/form/dndupload.js
index 8c612eb661e..29d4b91cb7d 100644
--- a/lib/form/dndupload.js
+++ b/lib/form/dndupload.js
@@ -176,10 +176,13 @@ M.form_dndupload.init = function(Y, options) {
         init_page_events: function() {
             this.Y.on('dragenter', this.drag_enter_page, 'body', this);
             this.Y.on('dragleave', this.drag_leave_page, 'body', this);
+            this.Y.on('dragover', function(e) {
+                e.preventDefault();
+            }, 'body', this);
             this.Y.on('drop', function() {
                 this.pageentercount = 0;
                 this.hide_drop_target();
-            }.bind(this));
+            }, 'body', this);
         },
 
         /**