diff --git a/addons/web_editor/static/lib/summernote/src/js/module/DragAndDrop.js b/addons/web_editor/static/lib/summernote/src/js/module/DragAndDrop.js
index b8871599c6f..9e96dc329eb 100644
--- a/addons/web_editor/static/lib/summernote/src/js/module/DragAndDrop.js
+++ b/addons/web_editor/static/lib/summernote/src/js/module/DragAndDrop.js
@@ -70,6 +70,10 @@ define([
         var dataTransfer = event.originalEvent.dataTransfer;
         var layoutInfo = dom.makeLayoutInfo(event.currentTarget || event.target);
 
+        /* ODOO: start_modification */
+        event.preventDefault();
+        /* ODOO: end_modification */
+
         if (dataTransfer && dataTransfer.files && dataTransfer.files.length) {
           event.preventDefault();
           layoutInfo.editable().focus();
@@ -83,6 +87,12 @@ define([
             var type = dataTransfer.types[i];
             var content = dataTransfer.getData(type);
 
+            /* ODOO: start_modification */
+            if (type.toLowerCase().indexOf('_moz_') > -1) {
+              return;
+            }
+            /* ODOO: end_modification */
+
             if (type.toLowerCase().indexOf('text') > -1) {
               layoutInfo.holder().summernote('pasteHTML', content);
             } else {