diff --git a/lib/weblib.php b/lib/weblib.php
index 1f09ce182b4..becb157b50d 100644
--- a/lib/weblib.php
+++ b/lib/weblib.php
@@ -1745,12 +1745,12 @@ function convert_urls_into_links(&$text) {
     if ($unicoderegexp) { //We can use unicode modifiers
         $text = preg_replace('#(?<!=["\'])(((http(s?))://)(((([\pLl0-9]([\pLl0-9]|-)*[\pLl0-9]|[\pLl0-9])\.)+([\pLl]([\pLl0-9]|-)*[\pLl0-9]|[\pLl]))|(([0-9]{1,3}\.){3}[0-9]{1,3}))(:[\pL0-9]*)?(/([\pLl0-9\.!$&\'\(\)*+,;=_~:@-]|%[a-fA-F0-9]{2})*)*(\?[\pLl0-9\.!$&\'\(\)*+,;=_~:@/?-]*)?(\#[\pLl0-9\.!$&\'\(\)*+,;=_~:@/?-]*)?)(?<![,.;])#iu',
                              '<a href="\\1" class="_blanktarget">\\1</a>', $text);
-        $text = preg_replace('#(?<!=["\'])((www\.([\pLl0-9]([\pLl0-9]|-)*[\pLl0-9]|[\pLl0-9])\.)+([\pLl]([\pLl0-9]|-)*[\pLl0-9]|[\pLl])(:[\pL0-9]*)?(/([\pLl0-9\.!$&\'\(\)*+,;=_~:@-]|%[a-fA-F0-9]{2})*)*(\?[\pLl0-9\.!$&\'\(\)*+,;=_~:@/?-]*)?(\#[\pLl0-9\.!$&\'\(\)*+,;=_~:@/?-]*)?)(?<![,.;])#iu',
+        $text = preg_replace('#(?<!=["\']|//)((www\.([\pLl0-9]([\pLl0-9]|-)*[\pLl0-9]|[\pLl0-9])\.)+([\pLl]([\pLl0-9]|-)*[\pLl0-9]|[\pLl])(:[\pL0-9]*)?(/([\pLl0-9\.!$&\'\(\)*+,;=_~:@-]|%[a-fA-F0-9]{2})*)*(\?[\pLl0-9\.!$&\'\(\)*+,;=_~:@/?-]*)?(\#[\pLl0-9\.!$&\'\(\)*+,;=_~:@/?-]*)?)(?<![,.;])#iu',
                              '<a href="http://\\1" class="_blanktarget">\\1</a>', $text);
     } else { //We cannot use unicode modifiers
         $text = preg_replace('#(?<!=["\'])(((http(s?))://)(((([a-z0-9]([a-z0-9]|-)*[a-z0-9]|[a-z0-9])\.)+([a-z]([a-z0-9]|-)*[a-z0-9]|[a-z]))|(([0-9]{1,3}\.){3}[0-9]{1,3}))(:[a-zA-Z0-9]*)?(/([a-z0-9\.!$&\'\(\)*+,;=_~:@-]|%[a-f0-9]{2})*)*(\?[a-z0-9\.!$&\'\(\)*+,;=_~:@/?-]*)?(\#[a-z0-9\.!$&\'\(\)*+,;=_~:@/?-]*)?)(?<![,.;])#i',
                              '<a href="\\1" class="_blanktarget">\\1</a>', $text);
-        $text = preg_replace('#(?<!=["\'])((www\.([a-z0-9]([a-z0-9]|-)*[a-z0-9]|[a-z0-9])\.)+([a-z]([a-z0-9]|-)*[a-z0-9]|[a-z])(:[a-zA-Z0-9]*)?(/([a-z0-9\.!$&\'\(\)*+,;=_~:@-]|%[a-f0-9]{2})*)*(\?[a-z0-9\.!$&\'\(\)*+,;=_~:@/?-]*)?(\#[a-z0-9\.!$&\'\(\)*+,;=_~:@/?-]*)?)(?<![,.;])#i',
+        $text = preg_replace('#(?<!=["\']|//)((www\.([a-z0-9]([a-z0-9]|-)*[a-z0-9]|[a-z0-9])\.)+([a-z]([a-z0-9]|-)*[a-z0-9]|[a-z])(:[a-zA-Z0-9]*)?(/([a-z0-9\.!$&\'\(\)*+,;=_~:@-]|%[a-f0-9]{2})*)*(\?[a-z0-9\.!$&\'\(\)*+,;=_~:@/?-]*)?(\#[a-z0-9\.!$&\'\(\)*+,;=_~:@/?-]*)?)(?<![,.;])#i',
                              '<a href="http://\\1" class="_blanktarget">\\1</a>', $text);
     }