diff --git a/htdocs/core/lib/functions2.lib.php b/htdocs/core/lib/functions2.lib.php
index 45fea25224b..d7dc7724874 100644
--- a/htdocs/core/lib/functions2.lib.php
+++ b/htdocs/core/lib/functions2.lib.php
@@ -2504,7 +2504,7 @@ function convertBackOfficeMediasLinksToPublicLinks($notetoshow)
 {
     global $dolibarr_main_url_root;
     // Define $urlwithroot
-    $urlwithouturlroot=preg_replace('/'.preg_quote(DOL_URL_ROOT,'/').'$/i','',trim($dolibarr_main_url_root));
+    $urlwithouturlroot=preg_replace('/'.preg_quote(DOL_URL_ROOT,'/').'$/i', '', trim($dolibarr_main_url_root));
     $urlwithroot=$urlwithouturlroot.DOL_URL_ROOT;		// This is to use external domain name found into config file
     //$urlwithroot=DOL_MAIN_URL_ROOT;					// This is to use same domain name than current
     $notetoshow=preg_replace('/src="[a-zA-Z0-9_\/\-\.]*(viewimage\.php\?modulepart=medias[^"]*)"/', 'src="'.$urlwithroot.'/\1"', $notetoshow);