diff --git a/apps/files_external/js/settings.js b/apps/files_external/js/settings.js
index 2470cb4c60..bd3bd0f584 100644
--- a/apps/files_external/js/settings.js
+++ b/apps/files_external/js/settings.js
@@ -57,6 +57,14 @@ function highlightInput($input) {
  * @param {int} userListLimit page size for result list
  */
 function addSelect2 ($elements, userListLimit) {
+	var escapeHTML = function (text) {
+		return text.toString()
+			.split('&').join('&')
+			.split('<').join('&lt;')
+			.split('>').join('&gt;')
+			.split('"').join('&quot;')
+			.split('\'').join('&#039;');
+	};
 	if (!$elements.length) {
 		return;
 	}