diff --git a/api/js/etemplate/et2_widget_url.js b/api/js/etemplate/et2_widget_url.js
index f684b30555..56ef80c47a 100644
--- a/api/js/etemplate/et2_widget_url.js
+++ b/api/js/etemplate/et2_widget_url.js
@@ -48,7 +48,7 @@ var et2_url = (function(){ "use strict"; return et2_textbox.extend(
 	 *
 	 * Same preg is in Etemplate\Widget\Url PHP class!
 	 */
-	EMAIL_PREG: new RegExp(/^(([^\042',<][^,<]+|\042[^\042]+\042|\'[^\']+\'|"(?:[^"\\]|\\.)*")\s?<)?[^\x00-\x20()<>@,;:\042\[\]\x80-\xff]+[^.\s]?@([a-z0-9ÄÖÜäöüß](|[a-z0-9ÄÖÜäöüß_-]*[a-z0-9ÄÖÜäöüß])\.)+[a-z]{2,}>?$/i),
+	EMAIL_PREG: new RegExp(/^(([^\042',<][^,<]+|\042[^\042]+\042|\'[^\']+\'|"(?:[^"\\]|\\.)*")\s?<)?[^\x00-\x20()<>@,;:\042\[\]\x80-\xff]+(?<![.\s])@([a-z0-9ÄÖÜäöüß](|[a-z0-9ÄÖÜäöüß_-]*[a-z0-9ÄÖÜäöüß])\.)+[a-z]{2,}>?$/i),
 	/**
 	 * @memberOf et2_url
 	 */
diff --git a/api/src/Etemplate/Widget/Url.php b/api/src/Etemplate/Widget/Url.php
index facdfa3fcd..951ef87eff 100644
--- a/api/src/Etemplate/Widget/Url.php
+++ b/api/src/Etemplate/Widget/Url.php
@@ -42,7 +42,7 @@ class Url extends Etemplate\Widget
 	 *
 	 * Same preg is in et2_widget_url Javascript class, but no \x00 allowed and /u modifier for utf8!
 	 */
-	const EMAIL_PREG = "/^(([^\042',<][^,<]+|\042[^\042]+\042|\'[^\']+\'|)\s?<)?[^\x01-\x20()<>@,;:\042\[\]]+[^.\s]?@([a-z0-9ÄÖÜäöüß](|[a-z0-9ÄÖÜäöüß_-]*[a-z0-9ÄÖÜäöüß])\.)+[a-z]{2,}>?$/iu";
+	const EMAIL_PREG = "/^(([^\042',<][^,<]+|\042[^\042]+\042|\'[^\']+\'|)\s?<)?[^\x01-\x20()<>@,;:\042\[\]]+(?<![.\s])@([a-z0-9ÄÖÜäöüß](|[a-z0-9ÄÖÜäöüß_-]*[a-z0-9ÄÖÜäöüß])\.)+[a-z]{2,}>?$/iu";
 
 	// allow private IP addresses (starting with 10.|169.254.|192.168.) too
 	//const URL_PREG = '_^(?:(?:https?|ftp)://)?(?:\S+(?::\S*)?@)?(?:(?!10(?:\.\d{1,3}){3})(?!127(?:\.\d{1,3}){3})(?!169\.254(?:\.\d{1,3}){2})(?!192\.168(?:\.\d{1,3}){2})(?!172\.(?:1[6-9]|2\d|3[0-1])(?:\.\d{1,3}){2})(?:[1-9]\d?|1\d\d|2[01]\d|22[0-3])(?:\.(?:1?\d{1,2}|2[0-4]\d|25[0-5])){2}(?:\.(?:[1-9]\d?|1\d\d|2[0-4]\d|25[0-4]))|(localhost)|(?:(?:[a-z\x{00a1}-\x{ffff}0-9]+-?)*[a-z\x{00a1}-\x{ffff}0-9]+)(?:\.(?:[a-z\x{00a1}-\x{ffff}0-9]+-?)*[a-z\x{00a1}-\x{ffff}0-9]+)*(?:\.(?:[a-z\x{00a1}-\x{ffff}]{2,})))(?::\d{2,5})?(?:/[^\s]*)?$_iuS';